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[Text] / D.Y. Rogozin [et al.] // Aquat. Ecol. - 2010. - Vol. 44, Is. 3. - pp. 485-496, DOI 10.1007/s10452-010-9328-6. - Cited References: 27. - We thank Mr. Fyodor Kozlov for assistance in winter lake surveys, Dr. Alexander Tolomeev and Dr. Egor Zadereev (Institute of Biophysics SD RAS) for field data of August 2006, Dr. Galina Kalacheva (Institute of Biophysics SD RAS) for ash content determination and all others who helped us in expeditions. We are also very grateful to Dr. Wolf Mooij (Netherlands Institute of Ecology) and two anonymous reviewers for valuable comments and advice on article preparation. This work was partly supported by the Netherlands Organization for Scientific Research, Grant 047.011.2004.030, the Russian Foundation for Basic Research, Grants No. 09-04-01114-a and 09-05-00915-a, by Siberian Branch of Russian Academy of Sciences, Integrative Project No. 95 and joint Taiwan-Siberian Project No. 149, by Russian Academy of Sciences, Program No. 23.15, by award No. PG07-002-1 of the Ministry of Education and Sciences of Russian Federation and U.S. Civilian Research & Development Foundation for the Independent States of the Former Soviet Union (CRDF). . - ISSN 1386-2588РУБ Ecology + Limnology + Marine & Freshwater Biology

Аннотация: In a brackish, temperate, 24-m-deep Lake Shira, the profiles of salinity, temperature, oxygen and sulfide concentrations were measured on a seasonal basis from 2002 to 2009. The lake was shown to be meromictic with autumnal overturn restricted to mixolimnion. The depth of mixolimnion and position of oxic-anoxic interface varied annually. The spring mixing processes contribute to the formation of mixolimnion in autumn. The exceptionally windy spring of 2007 caused the deepening of mixolimnion in the winter of 2008. The winter position of oxic-anoxic interface was affected by the position of lower boundary of mixolimnion in all winters. The salinity in the winter mixolimnion increased compared with the autumn because of freezing out of salts from the upper water layers meters during ice formation and their dissolution in water below. The profiles of salinity and temperature were simulated by the mathematical 1-D model of temperature and salinity conditions taking into account ice formation. The simulated profiles generally coincided with the measured ones. The coincidence implies that simplified one-dimensional model can be applied to roughly describe salinity and density profiles and mixing behavior of Lake Shira.


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Rogozin, D.Y.; Genova, S.N.; Генова, Светлана Николаевна; Gulati, R.D.; Degermendzhy, A.G.

[Text] / S.N. Genova [et al.] // Aquat. Ecol. - 2010. - Vol. 44, Is. 3. - pp. 571-584, DOI 10.1007/s10452-010-9327-7. - Cited References: 26. - The study was financially supported by the Netherlands Organization for Scientific Research (NOW), Grant 047.011.2004.030; RFBR, Grant 05-05-89002; RFBR, Grant 07-01-00153; Multidisciplinary integration project of SB RAS No. 95. . - ISSN 1386-2588РУБ Ecology + Limnology + Marine & Freshwater Biology

Аннотация: In meromictic lakes such as Lake Shira, horizontal inhomogeneity is small in comparison with vertical gradients. To determine the vertical distribution of temperature, salinity, and density of water in a deep zone of a Lake Shira, or other saline lakes, a one-dimensional (in vertical direction) mathematical model is presented. A special feature of this model is that it takes into account the process of ice formation. The model of ice formation is based on the one-phase Stefan problem with the linear temperature distribution in the solid phase. A convective mixed layer is formed under an ice cover due to salt extraction in the ice formation process. To obtain analytical solutions for the vertical distribution of temperature, salinity, and density of water, we use a scheme of vertical structure in the form of several layers. In spring, the ice melts as top and bottom. These processes are taken into account in the model. The calculated profiles of salinity and temperature of Shira Lake are in good agreement with field measurement data for each season. Additionally, we focussed on the redox zone, which is the zone in which the aerobic layers of a water column meet the anaerobic ones. Hyperactivity of plankton communities is observed in this zone in lakes with hydrogen sulphide monimolimnion, and Lake Shira is among them. The location of the redox zone in the lake, which is estimated from field measurements, coincides with a sharp increase in density (the pycnocline) during autumn and winter. During spring and summer, the redox zone is deeper than the pycnocline. The location of pycnocline calculated with the hydro physical model is in good agreement with field measurement data.


Доп.точки доступа:
Genova, S.N.; Генова, Светлана Николаевна; Belolipetskii, V.M.; Белолипецкий, Виктор Михайлович; Rogozin, D.Y.; Degermendzhy, A.G.; Mooij, W.M.

[Text] / N. V. Erkaev [et al.] // Planet Space Sci. - 2014. - Vol. 98. - P. 106-119, DOI 10.1016/j.pss.2013.09.008. - Cited References: 94. - P. Odert, H. Lammer, K. G. Kislyakova and Yu. N. Kulikov acknowledge support from the Helmholtz Alliance project "Planetary Evolution and Life". E. Dorfi, M. Gudel, K. G. Kislyakova, H. Lammer, A. Stokl and E. A. Dorfi acknowledge the Austrian Science Fund (FWF) for supporting this study via the FWF NFN project S116 "Pathways to Habitability: From Disks to Active Stars, Planets and Life", and the related FWF NFN subprojects, S 116 02-N1 "Hydrodynamics in Young Star-Disk Systems", S116 604-N16 "Radiation & Wind Evolution from T Tauri Phase to ZAMS and Beyond", and S11607-N16 "Particle/Radiative Interactions with Upper Atmospheres of Planetary Bodies Under Extreme Stellar Conditions". M. Leitzinger and P. Odert also acknowledge the support from the FWF project P22950-N16. N. V. Erkaev acknowledges support by the RFBR Grant no 12-05-00152-a. Finally, H. Lammer thanks M. lkoma from the Department of Earth and Planetary Science, of the University of Tokyo, Japan, for discussions related to the accumulation of nebular-based hydrogen envelopes around Mars-mass bodies. Finally the authors thank an anonymous referee for the interesting and important suggestions and recommendations that helped to improve the results of our study. . - ISSN 0032-0633РУБ Astronomy & Astrophysics

Аннотация: Latest research in planet formation indicates that Mars formed within a few million years (Myr) and remained as a planetary embryo that never grew to a more massive planet. It can also be expected from dynamical models that most of Mars' building blocks consisted of material that formed in orbital locations just beyond the ice line which could have contained similar to 0.1-0.2 wt.% of H2O. By using these constraints, we estimate the nebula-captured and catastrophically outgassed volatile contents during the solidification of Mars' magma ocean and apply a hydrodynamic upper atmosphere model for the study of the soft X-ray and extreme ultraviolet (XUV) driven thermal escape of the martian protoatmosphere during the early active epoch of the young Sun. The amount of gas that has been captured from the protoplanetary disk into the planetary atmosphere is calculated by solving the hydrostatic structure equations in the protoplanetary nebula. Depending on nebular properties such as the dust grain depletion factor, planetesimal accretion rates and luminosities, hydrogen envelopes with masses >= 3 x 10(19) g to <= 6.5 x 10(22) g could have been captured from the nebula around early Mars. Depending on the before mentioned parameters, due to the planets low gravity and a solar XUV flux that was similar to 100 times stronger compared to the present value, our results indicate that early Mars would have lost its nebular captured hydrogen envelope after the nebula gas evaporated, during a fast period of similar to 0.1-7.5 Myr. After the solidification of early Mars' magma ocean, catastrophically outgassed volatiles with the amount of similar to 50-250 bar H2O and similar to 10-55 bar CO2 could have been lost during similar to 0.4-12 Myr, if the impact related energy flux of large planetesimals and small embryos to the planet's surface lasted long enough, that the steam atmosphere could have been prevented from condensing. If this was not the case, then our results suggest that the timescales for H2O condensation and ocean formation may have been shorter compared to the atmosphere evaporation timescale, so that one can speculate that sporadically periods, where some amount of liquid water may have been present on the planet's surface. However, depending on the amount of the outgassed volatiles, because of impacts and the high XUV-driven atmospheric escape rates, such sporadically wet surface conditions may have also not lasted much longer than similar to 0.4-12 Myr. After the loss of the captured hydrogen envelope and outgassed volatiles during the first 100 Myr period of the young Sun, a warmer and probably wetter period may have evolved by a combination of volcanic outgassing and impact delivered volatiles similar to 4.0 +/- 0.2 Gyr ago, when the solar XUV flux decreased to values that have been <10 times that of today's Sun. (C) 2013 Elsevier Ltd. All rights reserved.

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ИВМ СО РАН

Доп.точки доступа:
Erkaev, N.V.; Еркаев, Николай Васильевич; Lammer, H.; Elkins-Tanton, L.T.; Stokl, A.; Odert, P.; Marcq, E.; Dorfi, E.A.; Kislyakova, K.G.; Kulikov, Y.N.; Leitzinger, M.; Gudel, M.; Helmholtz Alliance project "Planetary Evolution and Life"; Austrian Science Fund (FWF); Austrian Science Fund (FWF) via the FWF NFN project [S116]; FWF NFN subprojects [S 116 02-N1, S116 604-N16, S11607-N16]; FWF project [P22950-N16]; RFBR [12-05-00152-a]

[Text] / V. M. Belolipetsky, S. N. Genova // Int. J. Comput. Fluid Dyn. - 1998. - Vol. 10, Is. 2. - P151-158, DOI 10.1080/10618569808961681. - Cited References: 6 . - ISSN 1061-8562РУБ Mechanics + Physics, Fluids & Plasmas

Аннотация: The erection of large hydroelectric power stations leads to appreciable changes in hydrothermal and ice river regimes both above and below the hydroscheme. The river regime change affects the adjacent areas ecology. To estimate completely the ecologic effect of designed and already constructed hydroelectric power stations, it is necessary to determine the hydrothermal and ice river regime changes. As a methodical basis for the construction of a set of computer algorithms, a method of splitting by physical processes and the module principle has been used. Among the hydro-ice-thermics problems of rivers and water reservoirs are the following: the determination of the temperature regime of a water reservoir, an investigation of stratified flows in a weakly-running water reservoir; an investigation of a hydrothermal river regime; an investigation of ice cover edge dynamics in the downstream of a river. For every problem, mathematical models of different levels of complication and computer programs have been worked out.

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Держатели документа:
Russian Acad Sci, Ctr Comp, Siberian Div, Krasnoyarsk, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
Krasnoyarsk State Tech Univ, Krasnoyarsk, Russia
ИВМ СО РАН

Доп.точки доступа:
Belolipetskii, V.M.; Белолипецкий, Виктор Михайлович; Genova, S.N.; Генова, Светлана Николаевна

/ V. M. Belolipetskii, S. N. Genova // J. Sib. Fed. Univ. Math. Phys. - 2016. - Vol. 9, Is. 2. - P158-165, DOI 10.17516/1997-1397-2016-9-2-158-165 . - ISSN 1997-1397
Аннотация: The theoretical description of the temperature field in the soils during freezing or thawing is carried out using solutions of Stefan’s problem. A mathematical model based on the equations of thermal conductivity for frozen and thawed layers. We consider the areas in which there are lakes or bogs. We distinguished the following layers in the vertical structure of the zone of permafrost: thawed soil, frozen soil, water, ice, snow. We offer a simplified numerical algorithm for solving of one-dimensional (in the vertical direction) heat conduction problems with moving boundaries of phase transition with the formation of new and cancellation of existing layers. A simplified numerical algorithm for solving one-dimensional (in the vertical direction) heat conduction problems with moving boundaries of phase transition with the formation of new and cancellation of existing layers is offering. © Siberian Federal University. All rights reserved.

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Institute of Computational Modelling SB RAS, Akademgorodok, 50/44, Krasnoyarsk, Russian Federation
Institute of Mathematics and Computer Science, Siberian Federal University, Svobodny, 79, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Belolipetskii, V. M.; Genova, S. N.

/ V. M. Belolipetskii [et al.] // Dokl. Earth Sci. - 2017. - Vol. 474, Is. 2. - P649-652, DOI 10.1134/S1028334X17060010 . - ISSN 1028-334X
Аннотация: The in-situ data on the vertical structure and stability of the vertical stratification of saline Lake Shira over the past decade (2007–2015) are analyzed. Simplified mathematical models have shown that strong wind in the autumn of 2014 together with rather thick ice in the winter of 2015 caused a change in the circulation regime of this water reservoir from meromictic (incomplete mixing) to holomictic (compete mixing). Based on the results obtained, a circulation regime for deep saline lakes located in the continental climate zone, in particular, in the arid zones of Southern Siberia (Khakassia, Transbaikal, and Altai) can be predicted under various climate scenarios of the future. © 2017, Pleiades Publishing, Ltd.

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Institute of Computational Modeling, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Belolipetskii, V. M.; Degermendzhi, A. G.; Genova, S. N.; Rogozin, D. Y.

/ D. Y. Rogozin [et al.] // Limnologica. - 2017. - Vol. 66. - P12-23, DOI 10.1016/j.limno.2017.06.004 . - ISSN 0075-9511
Аннотация: Saline Lake Shira (Southern Siberia, Russia) was meromictic through the observation period 2002–2015. During the under-ice periods of 2015 and 2016, complete mixing of the water column was recorded for the first time, and hydrogen sulphide temporarily disappeared from the water column of the lake; i.e. in those years the lake turned to holomixis. In the summer of 2015, a sharp increase in chlorophyll a, organic carbon, zooplankton, and phytoflagellates was observed in the lake, which was probably due to the release of nutrients from the monimolimnion. Purple sulfur bacteria completely disappeared from the lake after the first mixing in 2015, and did not reappear despite the restoration of meromixis in 2017. Thus, it was demonstrated that purple sulfur bacteria are sensitive to the weakening of the stratification of Lake Shira. Based on the data of the seasonal monitoring of temperature and salinity profiles over the period 2002–2017, it was presumed that the main cause of deep mixing in 2015 was the weakening of the salinity gradient due to strong wind impact and early ice retreat in the spring of 2014. In addition, it was shown that in previous years a significant contribution to the maintenance of meromixis was made by an additional influx of fresh water, which caused a rise in the lake level in the period 2002–2007. Thus, we identified a relationship between the stratification regime of the lake and the change in its level, which provides valuable information both for the forecast of water quality and for reconstruction of the Holocene climate humidity in this region of Southern Siberia from the sediment cores of Lake Shira. © 2017 Elsevier GmbH

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Держатели документа:
Institute of Biophysics Siberian Branch of Russian Academy of Sciences, Akademgorodok 50-50, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodny, 79, Krasnoyarsk, Russian Federation
Institute of Computing Modeling Siberian Branch of Russian Academy of Sciences, Akademgorodok 50-44, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Rogozin, D. Y.; Tarnovsky, M. O.; Belolipetskii, V. M.; Zykov, V. V.; Zadereev, E. S.; Tolomeev, A. P.; Drobotov, A. V.; Barkhatov, Y. V.; Gaevsky, N. A.; Gorbaneva, T. B.; Kolmakova, A. A.; Degermendzhi, A. G.

[Text] : доклад, тезисы доклада / V. M. Belolipetsky, P. V. Belolipetsky, S. N. Genova // 15th International Conference on Environmental Science and Technology (CEST 2017) : proceedings of the 15th International Conference on Environmental Science and Technology (CEST 2017). - Rhodes : Global Network for Environmental Science and Technology, 2017. - Ст. 00727
Аннотация: Mathematical model was developed for simulation of Krasnoyarsk hydropower station (HPS) intake regime influence on ice and water temperature downstream of the dam. Current reservoir vertical temperature profile and water temperatures of downstream river were used for the verification of the model. Using this model we estimated influence of stratification, withdrawal position and discharge on temperature of water inflow into HPS. It was estimated that changeover to upper-layer intake from current deep-layers intake allows to increase water temperature of Yenisey at Krasnoyarsk city on 6-8 C at summer period

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Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science

Доп.точки доступа:
Belolipetsky, V.M.; Belolipetsky, P.V.; Genova, S.N.; 15th International Conference on Environmental Science and Technology (CEST 2017)(2017 ; 31.08 - 02.09 ; Rhodes)
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[Текст] / Виктор М. Белолипецкий, Светлана Н. Генова // Новые методы и результаты исследований ландшафтов в Европе, Центральной Азии и Сибири : монография. В 5-ти томах. - Москва : Всероссийский научно-исследовательский институт агрохимии имени Д.Н. Прянишникова, 2018. - Том III. - С. 311-314, DOI 10.25680/6852.2018.29.22.258 . - ISBN 978-5-9238-0249-8
   Перевод заглавия: A Model of the Dynamics of the Frozen Soil Depth in Bog-Lake Landscapes
Аннотация: Теоретическое описание температурного поля в почвах при их промерзании или оттаивании осуществляется с помощью решений задач Стефана. Математическая модель основывается на уравнениях теплопроводности для мерзлых и талых слоев. Рассматриваются территории, на которых имеются озера или болота. Выделяются следующие слои в вертикальной структуре зоны вечной мерзлоты: талый грунт, мерзлый грунт, вода, лед, снег. Предлагается упрощенный численный алгоритм решения одномерных (в вертикальном направлении) задач теплопроводности с подвижными границами фазового перехода с образованием новых и аннулированием существующих слоев.
The theoretical description of temperature fields in soils during freezing or thawing is carried out using solutions of Stefan's problem. We developed a mathematical model based on the equations of thermal conductivity for frozen and thawed layers. Those areas in which are lakes or bogs were considered. We distinguished between following layers in the vertical structure of the zone of permafrost: thawed soil, frozen soil, water, ice, snow. We offer a simplified numerical algorithm for solving of onedimensional (in the vertical direction) heat conduction problems with moving boundaries of phase transition with the formation of new and cancellation of existing layers.

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Держатели документа:
Институт вычислительного моделирования

Доп.точки доступа:
Белолипецкий, Виктор М.; Генова, Светлана Н.
Нет сведений об экземплярах (Источник в БД не найден)

/ E. Kirik [et al.] ; ed.: V. I. Travush, V. M. Fomin // VII INTERNATIONAL SYMPOSIUM ACTUAL PROBLEMS OF COMPUTATIONAL SIMULATION : IOP PUBLISHING LTD, 2018. - Vol. 456: 7th International Symposium on Actual Problems of Computational (JUL 01-08, 2018, Novosibirsk, RUSSIA). - Ст. 012073. - (IOP Conference Series-Materials Science and Engineering), DOI 10.1088/1757-899X/456/1/012073. - Cited References:11. - This study was partially supported by the Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory, Krasnoyarsk Territorial Foundation for Support of Scientific and RD Activities, project no. 17-41-240947 p_a. . - РУБ Computer Science, Interdisciplinary Applications + Engineering, Civil

Аннотация: It is shown in the paper how fire evacuation simulation can be applied to check fire safety and find safe conditions under design stadia of the building. Mathematical background of fire and evacuation simulation is presented. An ice stadium is considered as an example.

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RAS, SB, Inst Computat Modelling, Akad Gorodok 50-44, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Petr & Gas Engn Dept, Pr Svobodny 79, Krasnoyarsk 660041, Russia.
RAS, SB, Inst Thermal Phys, Lavrentev Ave 1, Novosibirsk 630090, Russia.

Доп.точки доступа:
Kirik, E.; Dekterev, A.; Litvintsev, K.; Malyshev, A.; Kharlamov, E.; Travush, V.I. \ed.\; Fomin, V.M. \ed.\; Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory, Krasnoyarsk Territorial Foundation for Support of Scientific and RD Activities [17-41-240947 p_a]

/ V. M. Belolipetskii [et al.] // J. Sib. Fed. Univ.-Math. Phys. - 2019. - Vol. 12, Is. 1. - P100-108, DOI 10.17516/1997-1397-2019-12-1-100-108. - Cited References:19. - The work was supported by the RFBR grants (16-05-00091) and Russian Foundation for Basic Research and the government of the region of the Russian Federation, grant 18-45-243002. . - ISSN 1997-1397. - ISSN 2313-6022РУБ Mathematics

Аннотация: Many salt lakes are meromictic, in which the water column is not mixed to the bottom for at least one year. In the stratified lake, the upper (epilimnion) and deep (hypolimnion) layers are distinguished, in which the density gradients are small. Between them is a layer of water (metalimnion), within which the density gradient is great. In the near-bottom layer, hydrogen sulphide accumulates and there is no oxygen. One-dimensional mathematical models are used to determine the dynamics of the vertical thermohaline structure of the salt lake Uchum. Two periods in the annual regime are considered: the period of the absence of the ice cover (IC) and the period with the existence of the IC. The vertical distributions of temperature and water salinity in Lake Uchum have been calculated in different seasons. The results of the calculations are consistent with the data of field measurements.

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Inst Computat Modelling SB RAS, Akademgorodok 50-44, Krasnoyarsk 660036, Russia.
Inst Biophys SB RAS, Akademgorodok 50-50, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Svobodny 79, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Belolipetskii, Victor M.; Genova, Svetlana N.; Degermendzhy, Andrey G.; Zykov, Vladimir V.; Rogozin, Denis Yu; RFBR [16-05-00091]; Russian Foundation for Basic Research; government of the region of the Russian Federation [18-45-243002]

/ D. E. Khrennikov, A. K. Titov, A. E. Ershov [et al.] // Mon. Not. Roy. Astron. Soc. - 2020. - Vol. 493, Is. 1. - P1344-1351, DOI 10.1093/mnras/staa329. - Cited References:32 . - ISSN 0035-8711. - ISSN 1365-2966РУБ Astronomy & Astrophysics

Аннотация: We have studied the conditions of through passage of asteroids with diameters 200, 100, and 50 m, consisting of three types of materials - iron, stone, and water ice, across the Earth's atmosphere with a minimum trajectory altitude in the range 10-15 km, The conditions of this passage with a subsequent exit into outer space with the preservation of a substantial fraction of the initial mass have been found, The results obtained support our idea explaining one of the long-standing problems of astronomy - the Tunguska phenomenon, which has not received reasonable and comprehensive interpretations to date. We argue that the Tunguska event was caused by an iron asteroid body, which passed through the Earth's atmosphere and continued to the near-solar orbit.

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Держатели документа:
Siberian Fed Univ, Svobodny Av 79-10, Krasnoyarsk 660041, Russia.
Moscow Inst Phys & Technol, Inst Sky Per 9, Dolgoprudnyi 141700, Russia.
Inst Computat Modeling SB RAS, Akad Gorodok 50-44, Krasnoyarsk 660036, Russia.
PN Lebedev Phys Inst, Leninsky Prosp 53, Moscow 119991, Russia.
Fed Res Ctr KSC SB RAS, LV Kirensky Inst Phys, Akad Gorodok 50-38, Krasnoyarsk 660036, Russia.
Siberian State Univ Sci & Technol, Krasnoyarsky Rabochy Av 31, Krasnoyarsk 660014, Russia.

Доп.точки доступа:
Khrennikov, Daniil E.; Titov, Andrei K.; Ershov, Alexander E.; Pariev, Vladimir, I; Karpov, Sergei, V