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    Graphite and diamond formation in the carbide–oxide–carbonate interactions (Experimental modeling under mantle P,T-conditions) / Y. Bataleva [et al.] // Minerals. - 2018. - Vol. 8, Is. 11. - Ст. 522, DOI 10.3390/min8110522. - Cited References: 67. - The authors express their sincere thanks to the in-house Editor, the guest Academic Editor, and three anonymous Reviewers for helpful and constructive reviews. The authors thank S. Ovchinnikov for his assistance in implementation of Mössbauer spectroscopy measurements and A. Moskalev for his assistance in the work preparation. . - ISSN 2075-163X
   Перевод заглавия: Образование графита и алмаза при взаимодействиях карбид-оксид-карбонат (экспериментальное моделирование в Р,Т-условиях мантии)
Кл.слова (ненормированные):
Cohenite -- Graphite -- Diamond -- CO2 fluid -- Carbonate -- Garnet -- Experiment -- High pressure -- Lithospheric mantle -- Metasomatism
Аннотация: Experimental modeling of the formation of graphite and diamond as a result of carbide–fluid interactions was performed in the Fe3C–SiO2–Al2O3–(Mg,Ca)CO3 systems at 6.3 and 7.5 GPa and 1100–1650 °C. In the experiments with ƒO2-gradient (7.5 GPa, 1250–1350 °C), graphite + magnesiowüstite + garnet ± cohenite assemblage was formed. Graphite was produced through the redox interactions of carbide with carbonate or CO2 (reducing conditions), and redox reactions of magnesiowüstite and CO2 (oxidizing conditions). At 1450–1650 °C, crystallization of graphite, garnet, magnesiowüstite and ferrospinel, as well as generation of Fe2+,3+-rich carbonate–silicate melt occurred. This melt, saturated with carbon, acted as a medium of graphite crystallization and diamond growth on seeds. In the experiments without ƒO2-gradient (6.3 GPa), decarbonation reactions with the formation of CO2-fluid and Fe,Mg,Ca-silicates, as well as C0-producing redox reactions of CO2-fluid with cohenite were simultaneously realized. As a result, graphite (± diamond growth) was formed in assemblage with Fe2+,Fe3+,Mg-silicates and magnetite (1100–1200 °C), or with Fe3+-rich garnet and orthopyroxene (1300–1500 °C). It has been established that a potential mechanism for the crystallization of graphite or diamond growth is the oxidation of cohenite by CO2-fluid to FeO and Fe3O4, accompanied by the extraction of carbon from Fe3C and the corresponding reduction of CO2 to C0.

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Держатели документа:
Sobolev Institute of Geology and Mineralogy, Siberian Branch of Russian Academy of Sciences, Koptyug ave 3, Novosibirsk, 630090, Russian Federation
Department of Geology and Geophysics, Novosibirsk State University, Pirogova str 2, Novosibirsk, 630090, Russian Federation
Kirensky Institute of Physics, Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Bataleva, Y.; Palyanov, Y.; Borzdov, Y.; Novoselov, I.; Bayukov, O. A.; Баюков, Олег Артемьевич
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Conditions of formation of iron-carbon melt inclusions in garnet and orthopyroxene under P-T conditions of lithospheric mantle / Y. V. Bataleva [et al.] // Petrology. - 2018. - Vol. 26, Is. 6. - P. 565-574, DOI 10.1134/S0869591118060024. - Cited References: 45. - This work was supported by the Russian Foundation for Basic Research (project no. 16-35-60024) and a State Assignment (project no. 0330-2016-0007). . - ISSN 0869-5911. - ISSN 1556-2085

РУБ Geosciences, Multidisciplinary + Mineralogy
Рубрики:
EARTHS LOWER MANTLE
   DIAMOND FORMATION
   DEEP MANTLE
   PHYSICOCHEMICAL PARAMETERS
Кл.слова (ненормированные):
high-pressure experiment -- metal-carbon melt -- graphite -- diamond -- CO2-fluid -- mantle silicates -- mantle metasomatism
Аннотация: Of great importance in the problem of redox evolution of mantle rocks is the reconstruction of scenarios of alteration of Fe0- or Fe3C-bearing rocks by oxidizing mantle metasomatic agents and the evaluation of stability of these phases under the influence of fluids and melts of different compositions. Original results of high-temperature high-pressure experiments (P = 6.3 GPa, T = 1300–1500°С) in the carbide–oxide–carbonate systems (Fe3C–SiO2–(Mg,Ca)CO3 and Fe3C–SiO2–Al2O3–(Mg,Ca)CO3) are reported. Conditions of formation of mantle silicates with metallic or metal–carbon melt inclusions are determined and their stability in the presence of CO2-fluid representing the potential mantle oxidizing metasomatic agent are estimated. It is established that garnet or orthopyroxene and CO2-fluid are formed in the carbide–oxide–carbonate system through decarbonation, with subsequent redox interaction between CO2 and iron carbide. This results in the formation of assemblage of Fe-rich silicates and graphite. Garnet and orthopyroxene contain inclusions of a Fe–C melt, as well as graphite, fayalite, and ferrosilite. It is experimentally demonstrated that the presence of CO2-fluid in interstices does not affect on the preservation of metallic inclusions, as well as graphite inclusions in silicates. Selective capture of Fe–C melt inclusions by mantle silicates is one of the potential scenarios for the conservation of metallic iron in mantle domains altered by mantle oxidizing metasomatic agents.

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Публикация на русском языке Условия образования включений железо-углеродного расплава в гранатах и ортопироксенах при P-T параметрах литосферной мантии [Текст] / Ю. В. Баталева [и др.] // Петрология. - 2018. - Т. 26 № 6. - С. 571-582

Держатели документа:
Russian Acad Sci, Sobolev Inst Geol & Mineral, Siberian Branch, Novosibirsk, Russia.
Novosibirsk State Univ, Novosibirsk, Russia.
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk, Russia.

Доп.точки доступа:
Bataleva, Yu. V.; Palyanov, Yu. N.; Borzdov, Yu. M.; Novoselov, I. D.; Bayukov, O. A.; Баюков, Олег Артемьевич; Sobolev, N. V.; Russian Foundation for Basic Research [16-35-60024]; [0330-2016-0007]
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    Aliovalent substitution toward reinforced structural rigidity in Ce3+-doped garnet phosphors featuring improved performance / T. Hu [et al.] // J. Mater. Chem. C. - 2019. - Vol. 7, Is. 46. - P. 14594-14600, DOI 10.1039/c9tc05354a. - Cited References: 38. - This work was supported by the National Natural Science Foundation of China (No. 51722202 and 51972118), the Guangdong Provincial Science & Technology Project (2018A050506004) and the Fundamental Research Funds for the Central Universities (D2190980). . - ISSN 2050-7534
   Перевод заглавия: Алиовалентное замещение с целью усиления структурной жесткости в люминофорных гранатах, легированных Ce3 + и имеющих улучшенные характеристики
Кл.слова (ненормированные):
Color -- Deterioration -- Efficiency -- Gallium alloys -- Garnets -- III-V semiconductors -- Indium alloys -- Photoluminescence -- Reinforcement -- Rigidity -- Semiconductor alloys -- Thermal Engineering -- Thermodynamic stability
Аннотация: Highly efficient phosphors with thermal stability and color-tunable emission are required for the fabrication of phosphor-converted white light-emitting diodes (pc-WLEDs). Currently developed engineering strategies are generally successful in photoluminescence tuning but, unfortunately, suffer severe deterioration in emission intensity/efficiency and/or thermal stability. Herein, an efficient aliovalent substitution strategy toward reinforced structural rigidity is proposed and demonstrated experimentally. By incorporating Be2+ ion into the garnet-type Lu2SrAl4SiO12:Ce3+ phosphor, the phosphor shows enhanced internal/external quantum efficiency, from 79.2%/26.7% to 84.5%/32.9%, photoluminescence tuning from green (peaking at ∼512 nm) to yellow (peaking at ∼552 nm), and zero thermal quenching, even up to 200 °C. The Be2+ substitution at the Al2/Si2 site enables stable and rigid local surroundings around the Ce3+ activator, which is responsible for the unprecedented performance. In addition, high-quality warm WLED devices with a luminous efficiency of 158.1 lm W-1, correlated color temperature of 3858 K and high color rendering index of 81.7, are obtained by combining Lu2SrAl4SiO12:Ce3+,Be2+ as the yellow emitter, CaAlSiN3:Eu2+ as the red emitter and a blue-emitting InGaN chip. These findings highlight a new strategy for performance optimization of LED phosphors by selecting rigid covalent compounds with further reinforced structural rigidity via aliovalent substitution.

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Держатели документа:
State Key Laboratory of Luminescent Materials and Devices, Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation

Доп.точки доступа:
Hu, T.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Xia, Z.; Zhang, Q.
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Effect of a Substrate on the Magnetoelectric Effect in Rare-Earth-Doped Bismuth Iron Garnet / S. S. Aplesnin [et al.] // JETP Letters. - 2019. - Vol. 110, Is. 3. - P. 223-230, DOI 10.1134/S0021364019150074. - Cited References: 29. - This work was supported jointly by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, and the Krasnoyarsk Science Foundation (project no. 18-42-240001 “Temperature-Induced Reversal of the Sign of Magnetoelectric Tensor Components in Neodymium-Doped Bismuth Iron Garnet”), as well as in part by the Russian Foundation for Basic Research (project nos. 18-32-00079_mol_a and 18-52-00009_bel_a) and by the Russian Ministry of Science and Higher Education (state contract no. 3.5743.2017/6.7). . - ISSN 0021-3640
Аннотация: The mechanism of relaxation of the electric polarization in thin films of rare-earth-doped bismuth iron garnet on glass and gallium gadolinium garnet substrates is determined in magnetic fields of 0 and 12 kOe in the temperature range of 80–380 K. The change in the sign of the residual electric polarization after switching off the electric field and the magnetic-field-induced shift of the hysteresis loop in the applied magnetic field are found. Linear and quadratic magnetoelectric effects with the tensor components depending on the substrate type are observed. The linear magnetoelectric effect is related to the spin–orbit coupling of electrons at the film–substrate interface, whereas the quadratic one is determined by the exchange–striction mechanism.

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Публикация на русском языке

Держатели документа:
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660014, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Department of Materials Science and Technology, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Masyugin, A. N.; Sitnikov, M. N.; Ishibashi, T.
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The first visualization of magnetic domain structure in iron garnet film by confocal raman microscopy / L. Agafonov [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. O6.2. - P. 302. - References: 4 . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
Raman spectroscopy -- iron garnet -- magnetooptics -- magnetic domain structure

Доп.точки доступа:
Agafonov, L.; Zelenovskiy, P.; Зеленовский Павел; Pamyatnykh, L.; Kuzmenko, A. M.; Кузьменко А. М.; Abakumov, P.; Абакумов П.; Vtyurin, A. N.; Втюрин, Александр Николаевич; Krylov, A. S.; Крылов, Александр Сергеевич; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН

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    Structure evolution and photoluminescence of Lu3(Al,Mg)2(Al,Si)3O12:Ce3+ phosphors: New yellow-color converters for blue LED-driven solid state lighting / H. Ji [et al.] // J. Mater. Chem. C. - 2016. - Vol. 4, Is. 28. - P. 6855-6863, DOI 10.1039/c6tc00966b. - Cited References: 44. - This work was partially supported by the National Natural Science Foundations of China (Grant No. 51511130035, 51272259, 61575182, 51561135015, and 51572232) and the Russian Foundation for Basic Research (Grant No. 15-52-53080). We are also grateful to financial support from the JSPS KAKENHI (No. 15K06448). H. J. thanks the China Scholarship Council (CSC) for scholarship support. V. V. A. was partially supported by the Ministry of Education and Science of the Russian Federation. . - ISSN 2050-7534
   Перевод заглавия: Изменения структуры и фотолюминесценция люминофоров Lu3(Al,Mg)2(Al,Si)3O12:Ce3+: новый желтый преобразователь голубого света, получаемого от твердотельных светодиодов
Рубрики:
WHITE LEDS
   LUMINESCENCE PROPERTIES
   EMITTING-DIODES
   GARNET PHOSPHORS
   SUBSTITUTION
   Ce3+
   PHASE
   Ca
Аннотация: This paper reports the development of new phosphors using the chemical unit cosubstituting solid solution design strategy. Starting from Lu3Al5O12, the Al3+-Al3+ couple in respective octahedral and tetrahedral coordination was simultaneously substituted by a Mg2+-Si4+ pair forming the Lu3(Al2-xMgx)(Al3-xSix)O12:Ce3+ (x = 0.5-2.0) series; as a result, the CeO8 polyhedrons were compressed and the emission got red-shifted from green to yellow together with the broadening. The evolution of, the unit cell, the local structural geometry as well as the optical properties of Ce3+ in these garnet creations, in response to the gradual Mg-Si substitution for Al-Al, were studied by combined techniques of structural refinement and luminescence measurements. The new composition Lu2.97Ce0.03Mg0.5Al4Si0.5O12 was comprehensively evaluated regarding its potential application in blue LED-driven solid state white lighting: the maximum emission is at 550 nm under ?ex = 450 nm; the internal and external quantum efficiencies can reach 85% and 49%, respectively; a 1-phosphor-converted wLED lamp fabricated using the as-prepared phosphor exhibits the luminous efficacy of 105 lm W-1, the correlated color temperature of 6164 K and the color rendering index (Ra) of 75.6. The new solid solution composition series is open for further optimization to enhance the competence for commercial consideration. © 2016 The Royal Society of Chemistry.

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Держатели документа:
National Laboratory of Mineral Materials, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing, China
Sialon Group, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan
College of Optical and Electronic Technology, China Jiliang University, Hangzhou, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
College of Materials, Xiamen University, Xiamen, China
Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing, China
Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk, Russian Federation
Functional Electronics Laboratory, Tomsk State University, Tomsk, Russian Federation
Laboratory of Semiconductor and Dielectric Materials, Novosibirsk State University, Novosibirsk, Russian Federation

Доп.точки доступа:
Ji, H.; Wang, L.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Hirosaki, N.; Xie, R.; Huang, Z.; Xia, Z.; Ten Kate, O. M.; Liu, L.; Atuchin, V. V.
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Colossal magnetostriction and electrostriction of bismuth-substituted neodymium iron garnet films / S. S. Aplesnin [et al.] // J. Magn. Magn. Mater. - 2018. - Vol. 464. - P. 44-49, DOI 10.1016/j.jmmm.2018.05.038. - Cited References: 27. - This study were supported by the Russian Foundation for Basic Research project №18-52-00009 Bel_a, № 18-32-00079 mol_a, the state order № 3.5743.2017/6.7. . - ISSN 0304-8853
Кл.слова (ненормированные):
Thermal expansion -- Magnetostriction -- Electrostriction
Аннотация: Electro- and magnetostriction mechanisms and temperature behavior of the length of bismuth-substituted neodymium iron garnet films on glass and gallium gadolinium garnet have been investigated. Electric- and magnetic-field and temperature dependences of the electro- and magnetostriction constants have been determined. It has been established that the magnetostriction constant changes its sign upon temperature variation. The experimental data are explained using a model of dipole glass with the magnetoelectric and magnetoelastic interaction.

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Держатели документа:
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics of SB RAS, Krasnoyarsk, Russian Federation
Department of Materials Science and Technology, Nagaoka University of Technology, Nagaoka, Niigata, Japan

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Masyugin, A. N.; Sitnicov, M. N.; Rybina, U. I.; Ishibashi, T.
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    The effects of Ga3+ substitution on local structure and photoluminescence of Tb3Al5O12:Ce garnet phosphor / J. Bi [et al.] // Ceram. Int. - 2018. - Vol. 44, Is. 7. - P8684-8690, DOI 10.1016/j.ceramint.2018.02.104. - Cited References: 30 . - ISSN 0272-8842
   Перевод заглавия: Эффект замещения Ga3+ в Tb3Al5O12:Ce гранате на локальную структуру и люминесценцию
Кл.слова (ненормированные):
TbAG:Ce -- Ga doping -- Crystal structure -- Photoluminescence
Аннотация: Tb0.985Ce0.015)3(Al1-xGax)5O12 garnet phosphors (x = 0, 0.1, 0.2, 0.3, and 1.0) were prepared by calcining their coprecipitated precursors in air at 1500 °C, followed by reduction in hydrogen at 1200 °C. Rietveld refinement of the XRD results suggested that the Ga dopant predominantly resides at the octahedral Al site of the garnet lattice. Ga doping led to linearly expanded lattice constant, cell volume and theoretical density of the garnet compound and successively lower intensity and longer average fluorescence lifetime of the ~ 570 nm emission of Ce3+. Blue shifted emission and 4f(2F5/2)→5d1(E2g) excitation and red shifted 4f(2F5/2)→5d2(E2g) excitation were also observed for the Ce3+ activator at a higher Ga content. The phenomena were interpreted by considering the band structure of the host, distortion of the CeO8 polyhedron, and centroid shift and field splitting of the Ce3+ 5d energy levels.

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Держатели документа:
Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang, Liaoning, China
Institute of Ceramics and Powder Metallurgy, School of Materials Science and Engineering, Northeastern University, Shenyang, Liaoning, China
State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metal, Kunming, Yunnan, China
College of New Energy, Bohai University, New Songshan District, Jinzhou, Liaoning, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, Japan

Доп.точки доступа:
Bi, J.; Wang, X.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhu, Q.; Li, X.; Chen, J.; Sun, X.; Kim, B. -N.; Li, J. -G.
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Influence of the substrate on the magnetoresistance of bismuth garnet ferrite substitute by rare earth / A. N. Masyugin [et al.] // Euro-asian symposium "Trends in magnetism" (EASTMAG-2019) : Book of abstracts / чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 1. - Ст. E.P14. - P. 444-445. - Cited References: 4. - The reported study was funded by Krasnoyarsk Regional Fund of Science according to the participation in the event/internship: The VII Euro-Asian Symposium “Trends in Magnetism” (EASTMAG-2019) . - ISBN 978-5-9500855-7-4

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russia
Department of Materials Science and Technology, Nagaoka University of Technology, Nagaoka, Niigata, Japan

Доп.точки доступа:
Ovchinnikov, S. G. \чл. конс. ком.\; Овчинников, Сергей Геннадьевич; Volkov, N. V. \чл. конс. ком.\; Волков, Никита Валентинович; Dzebisashvili, D. M. \чл. прогр. ком.\; Дзебисашвили, Дмитрий Михайлович; Masyugin, A. N.; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Ishibashi, T.; Российская академия наук; Уральское отделение РАН; Институт физики металлов им. М. Н. Михеева Уральского отделения РАН; Уральский федеральный университет им. первого Президента России Б.Н. Ельцина; Российский фонд фундаментальных исследований; Euro-Asian Symposium "Trends in MAGnetism"(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg); "Trends in MAGnetism", Euro-Asian Symposium(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg)
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10.

Optical and Mossbauer Spectroscopy of Europium Gallium Garnet Single Crystals Grown from Fluxes of Different Content / A. S. Aleksandrovsky, V. G. Arkhipkin [et al.] // Известия высших учебных заведений. Физика. - 2008. - Т. 51, № 10/2. - P110-114

Доп.точки доступа:
Aleksandrovsky, A.S.; Arkhipkin, V.G.; Bezmaternykh, L.N.; Gudim, I.A.; Krylov, A.S.; Vagizov, F.
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