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1.


   
    A novel Mn4+-activated fluoride red phosphor Cs30(Nb2O2F9)9(OH)3·H2O:Mn4+ with good waterproof stability for WLEDs / Y. Chen, F. Liu, Z. Zhang [et al.] // J. Mater. Chem. C. - 2022. - Vol. 10, Is. 18. - P. 7049-7057, DOI 10.1039/d2tc00132b. - Cited References: 56. - This work was financially supported by grants from the National Natural Science Foundation of China (NSFC) (No. 51802359), the Joint Funds of NSFC and Yunnan Province (No. U1702254), and Guangdong Basic and Applied Basic Research Foundation (No. 2020A1515010556) . - ISSN 2050-7534
   Перевод заглавия: Новый Mn4+-активированный фторидный красный люминофор Cs30(Nb2O2F9)9(OH)3ћH2O:Mn4+ с хорошей водонепроницаемостью для WLED
Кл.слова (ненормированные):
Crystal structure -- Fluorine compounds -- Gallium alloys -- III-V semiconductors -- Indium alloys -- Light emission -- Light emitting diodes -- Optical properties -- Phosphors -- Precipitation (chemical) -- Waterproofing
Аннотация: Red-light-emitting materials, as pivotal components of warm white light-emitting diodes (WLEDs), have drawn increasing public focus. Among these, Mn4+-doped red light-emitting fluorides have drawn considerable attention when combined with an InGaN chip; however, they suffer from poor water stability under humid conditions. In this work, a novel fluoride red phosphor, Cs30(Nb2O2F9)9(OH)3·H2O:xMn4+ (CNOFM), with good water resistance was synthesized for the first time using a facile co-precipitation method at ambient temperature. Experiments were implemented for the precise analysis of its crystal structure, optical properties, micro-morphology, thermal behavior, and waterproof properties. 6.66% Mn4+-doped CNOFM maintained a stable crystal structure and possessed strong PL intensity located at 633 nm with high color purity of 96%. CNOFM showed better thermal and waterproof stability compared with the commercial K2SiF6:Mn4+ red phosphor. Without any surface modifications, the PL intensity remained at about 83% of the initial value after immersion in water for 60 min, and the mechanism was investigated. Finally, a warm WLED with a CRI of 92.3 and CCT of 3271 K was fabricated using the CNOFM red phosphor.

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Держатели документа:
MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-Sen University, School of Chemistry/School of Marine Sciences, 510275/Zhuhai, Guangzhou, 519082, China
Laboratory of Crystal Physics, Federal Research Center KSC SB RAS, Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, 141980, Russian Federation
Institute of Resources Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou, 510650, China

Доп.точки доступа:
Chen, Y.; Liu, F.; Zhang, Z.; Hong, J.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bobrikov, I. A.; Shi, J.; Zhou, J.; Wu, M.
}
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2.


   
    Admittance spectroscopy of dopants implanted in silicon and impurity state-induced AC magnetoresistance effect / D. A. Smolyakov, A. S. Tarasov, M. A. Bondarev [et al.] // Mater. Sci. Semicond. Process. - 2021. - Vol. 126. - Ст. 105663, DOI 10.1016/j.mssp.2021.105663. - Cited References: 21. - This study was supported by the Government of the Russian Federation , Mega Grant for the Creation of Competitive World-Class Laboratories (Agreement no. 075-15-2019-1886) . - ISSN 1369-8001
Кл.слова (ненормированные):
Semiconductors -- Magnetoimpedance -- Impurities -- Implantation
Аннотация: A silicon structure doped with Ga using ion implantation has been investigated by admittance spectroscopy. It has been established that the presence of the Ga impurity, along with the B one, in the silicon structure leads to the appearance of the second peak in the temperature dependence of the real part of the impedance (admittance). Moreover, switching-on a magnetic field parallel to the sample plane shifts the singularities in the temperature curve to the high-temperature region. This results in the manifestation of both the positive and negative magnetoresistance effect upon temperature and magnetic field variation. It has been found by the standard admittance spectroscopy analysis of the impedance data that the energy structure of the investigated sample includes two interfacial energy levels ES1(0) = 42 meV and ES2(0) = 69.4 meV. As expected, these energies are consistent with the energies of B and Ga dopants. In a magnetic field, these levels increase by 3 meV for B and 2 meV for Ga, which induces the magnetoresistance effect. It has been demonstrated that the interfacial state-induced magnetoresistance effect can be tuned by ion implantation and dopant selection.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences660036, Russian Federation
Lobachevsky State University, Nizhny Novgorod603950, Russian Federation

Доп.точки доступа:
Smolyakov, D. A.; Смоляков, Дмитрий Александрович; Tarasov, A. S.; Тарасов, Антон Сергеевич; Bondarev, M. A.; Бондарев, Михаил Александрович; Nikolskaya, A. A.; Vasiliev, V. K.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Volkov, N. V.; Волков, Никита Валентинович
}
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3.


   
    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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4.


    Lukyanenko, A. V.
    Alternative technology for creating nanostructures using Dip Pen Nanolithography / A. V. Lukyanenko, T. E. Smolyarova // Semiconductors. - 2018. - Vol. 52: 25th International Symposium on Nanostructures - Physics and Technology (Jun 26-30, 2017, Saint Petersburg, Russia), Is. 5. - P. 636-638, DOI 10.1134/S1063782618050202. - Cited References:9. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project nos. 16-42-243046, 16-42-242036 and 16-42-243060. . - ISSN 1063-7826. - ISSN 1090-6479
РУБ Physics, Condensed Matter

Аннотация: For modern microelectronics, at the present time, the technologies of consciousness smart structures play an important role, which can provide accuracy, stability and high quality of the structures. Submicron lithography methods are quite expensive and have natural size limitations, not allowing the production of structures with an extremely small lateral limitation. Therefore, an intensive search was conducted for alternative methods for creating submicron resolution structures. Especially attractive one is the possibility of self-organization effects utilization, where the nanostructure of a certain size is formed under the influence of internal forces. The dip pen nanolithography method based on a scanning probe microscope uses a directwrite technology and allows one to carry out a playback of small size structures with high accuracy. In the experiment, a substrate coated with Au (15 nm) using a DPN technique is applied to the polymer to form a desired pattern nano-sized channel. The experiment was conducted using a pointed probe SiN, coated MHA-Acetonitrile, on the Si(111)/Fe3Si/Au structure.

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Публикация на "русском языке" Lukyanenko A. V. Alternative technology for creating nanostructures using Dip Pen Nanolithography [Текст] / A. V. Lukyanenko, T. E. Smolyarova // Физ. и техника полупроводников. - 2018. - Т. 52 : 25th International Symposium on Nanostructures - Physics and Technology (Jun 26-30, 2017, Saint Petersburg, Russia) Вып. 5.- с.519

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Smolyarova, T. E.; Смолярова, Татьяна Евгеньевна; Лукьяненко, Анна Витальевна; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund [16-42-243046, 16-42-242036, 16-42-243060]; International Symposium on Nanostructures - Physics and Technology(25th ; Jun 26-30, 2017 ; Saint Petersburg, Russia)
}
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5.


   
    Atomic layer deposition ZnO on porous Al2O3 nanofibers film / A. S. Voronin, A. N. Masiygin, M. S. Molokeev, S. V. Khartov // J. Phys. Conf. Ser. - 2020. - Vol. 1679, Is. 2. - Ст. 022072DOI 10.1088/1742-6596/1679/2/022072. - Cited References: 10. - Studies by scanning electron microscopy and X-ray powder diffraction were performed on the equipment of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS». The transmission electron microscopy investigations were conducted in the SFU Joint Scientific Center supported by the State assignment (#FSRZ-2020-0011) of the Ministry of Science and Higher Education of the Russian Federation
   Перевод заглавия: Нанесение атомного слоя ZnO на пленку из пористых нановолокон Al2O3
Кл.слова (ненормированные):
Alumina -- Aluminum oxide -- Atomic layer deposition -- Atoms -- Composite structures -- High resolution transmission electron microscopy -- II-VI semiconductors -- Nanofibers -- Oxide minerals -- Scanning electron microscopy
Аннотация: The paper presents the results of the formation and study of the morphological and structural characteristics of the mesoporous ZnO / Al2O3 nanofibers film (ZANF). The deposition of a ZnO layer on Al2O3 nanofibers film (ANF) ~ 1 µm thick was carried out by the method of atomic layer deposition. The morphology of the mesoporous composite layer ZnO / Al2O3 (ZANF) has been studied by scanning and transmission electron microscopy. It is shown that in the process of atomic layer deposition, the ZnO layer grows according to the Stranski-Krastanov mechanism. A ZnO layer less than 5 nm thick gives an island structure in which Al2O3 nanofibers are uniformly coated with ZnO particles, an increase in the ZnO layer thickness to 15 nm demonstrates a continuous coating of Al2O3 nanofibers. The system has a core-shell structure. The resulting composite structures are promising for applications in photocatalysis and gas sensing.

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Держатели документа:
Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences (KSC SB RAS), Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Reshetnev Siberian State University Science and Technology, Krasnoyarsk, 660037, Russian Federation
Kirensky Institute of Physics (FRC KSC SB RAS), Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Voronin, A. S.; Masiygin, A. N.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Khartov, S. V.; International Scientific Conference on Applied Physics, Information Technologies and Engineering(2nd ; 25 September - 4 October 2020 ; Krasnoyarsk, Russian Federation)
}
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6.


    ERUKHIMOV, M. S.
    CARRIER ENERGY FLUCTUATION SHIFT IN WIDE-GAP ANTIFERROMAGNETIC SEMICONDUCTORS / M. S. ERUKHIMOV, S. G. OVCHINNIKOV // Fiz. Tverd. Tela. - 1986. - Vol. 28, Is. 8. - P. 2306-2309. - Cited References: 9 . - ISSN 0367-3294
РУБ Physics, Condensed Matter


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Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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7.


    Gavrichkov, V. A.
    Characteristic features of the extrinsic electric resistance in ferromagnets with low carrier density / V. A. Gavrichkov, S. G. Ovchinnikov // Phys. Solid State. - 1999. - Vol. 41, Is. 1. - P. 59-66, DOI 10.1134/1.1130731. - Cited References: 26 . - ISSN 1063-7834
РУБ Physics, Condensed Matter
Рубрики:
QUANTUM TEMPERATURE OSCILLATIONS
   MAGNETIC SEMICONDUCTORS

   HGCR2SE4

   RESISTIVITY

   FILMS

Аннотация: Switching from simple semiconductors to more complicated chemical compositions, we encounter mainly nonstoichiometric or undoped compounds. Combined with other characteristic features of d(f) compounds, this can lead, together with the ordinary scattering by spin disorder in magnetic semiconductors, to an unusual impurity contribution to the total scattering of carriers even in intrinsic semiconductors. A unique scheme for calculating the energy structure of the conduction-band bottom of a ferromagnetic semiconductor and the temperature and field dependences of the impurity contribution to the resistivity is proposed on the basis of a model Hamiltonian. The computed magnetoresistance ratio is negative and has a maximum near T-c. A qualitative comparison is made between the results and the experimental temperature dependences of the Hall mobility and magnetoresistance ratio in the ternary semiconductor n-HgCr2Se4, which is nonstoichiometric with respect to the chalcogen. To identify previously unobserved temperature oscillations of the resistance, a careful analysis is made of the low-temperature part of the resistance using the relations obtained. (C) 1999 American Institute of Physics. [S1063-7834(99)01701-3].

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Публикация на русском языке Гавричков, Владимир Александрович. Особенности примесного электросопротивления в ферромагнетиках с малой концентрацией носителей [Текст] / В. А. Гавричков, С. Г. Овчинников // Физ. тверд. тела. - С.-Петербург, 1999. - Т. 41 Вып. 1. - С. 68-76

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Гавричков, Владимир Александрович
}
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8.


   
    Characterization of LSMO/C60 spinterface by first-principle calculations / E. A. Kovaleva [et al.] // Org. Electron.: Phys. Mater. Appl. - 2016. - Vol. 37. - P. 55-60, DOI 10.1016/j.orgel.2016.06.021. - Cited References: 40. - This work was supported by the Russian Scientific Fund (Project No. 14-13-00139). The authors would like to thank Institute of Computational Modeling of SB RAS, Krasnoyarsk; Joint Supercomputer Center of RAS, Moscow; Center of Equipment for Joint Use of Siberian Federal University, Krasnoyarsk; ICC of Novosibirsk State University and Siberian Supercomputer Center (SSCC) of SB RAS, Novosibirsk for providing the access to their supercomputers. . - ISSN 1566-1199
РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
INITIO MOLECULAR-DYNAMICS
   TOTAL-ENERGY CALCULATIONS

   AUGMENTED-WAVE METHOD

   ORGANIC SPIN-VALVES

   BASIS-SET

   SEMICONDUCTORS

   INJECTION

   SPINTRONICS

   TEMPERATURE

   ALGORITHM

Кл.слова (ненормированные):
C60 -- LSMO -- Spinterface -- DFT -- Magnetic ordering
Аннотация: Spinterface between fullerene C60 and La0 7Sr0 3MnO3 (LSMO) was studied by means of density functional theory. Co-existence of many different configurations was shown, and probabilities of their appearance were estimated. Dependence of composite properties on configuration and temperature was also investigated. Key role of transition metal atoms in both binding between composite compartments and magnetic ordering in C60 molecule was discussed. The latter was suggested to be responsible for spin-polarized charge transport while overall magnetic moment of fullerene molecule is relatively small. © 2016 Elsevier B.V.

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Держатели документа:
Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, Russian Federation
L.V. Kirensky Institue of Physics, 50 Akademgorodok, Krasnoyarsk, Russian Federation
Kyungpook National University, 80 Daekharo Bukgu, Daegu, South Korea
Siberian State Technological University, 82 Mira pr., Krasnoyarsk, Russian Federation

Доп.точки доступа:
Kovaleva, E. A.; Kuzubov, A. A.; Кузубов, Александр Александрович; Avramov, P. V.; Аврамов, Павел Вениаминович; Kuklin, A. V.; Куклин, Артем Валентинович; Mikhaleva, N. S.; Krasnov, P. O.; Краснов, Павел Олегович
}
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9.


   
    Collective Spin Glass State in Nanoscale Particles of Ferrihydrite / S. V. Stolyar, R. N. Yaroslavtsev, V. P. Ladygina [et al.] // Semiconductors. - 2020. - Vol. 54, Is. 12. - P. 1710-1712DOI 10.1134/S1063782620120362. - Cited References: 16. - This work was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, the Krasnoyarsk Regional Fund for the Support of Scientific and Technical Activities (project no. 19-42-240012 r_a “Magnetic resonance in ferrihydrite nanoparticles: Effects associated with the “core–shell” structure). This work was supported by a grant from the President of the Russian Federation for state support of young Russian scientists – candidates of sciences no. MK-1263.2020.3
Кл.слова (ненормированные):
nanoparticles -- ferrihydrite -- magnetic anisotropy -- magnetic resonance
Аннотация: Ferromagnetic resonance was used to study three types of ferrihydrite nanoparticles: nanoparticles formed as a result of the cultivation of microorganisms Klebsiella oxytoca; chemically prepared ferrihydrite nanoparticles; chemically prepared ferrihydrite nanoparticles doped with Cu. It is established from the ferromagnetic resonance data that the frequency-field dependence (in the temperature range ТP ‹ T ‹ T*) is described by the expression: 2πν/γ ⁼ НR + HA(T = 0)(1 – T/Т*), where γ is the gyromagnetic ratio, HR is the resonance field. The induced anisotropy HA is due to the spin-glass state of the near-surface regions. TP temperature characterizes the energy of the interparticle interaction of nanoparticles.

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Держатели документа:
Kirensky Institute of Physics, SB Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk Scientific Center, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Ladygina, V. P.; Balaev, D. A.; Балаев, Дмитрий Александрович; Pankrats, A. I.; Панкрац, Анатолий Иванович; Iskhakov, R. S.; Исхаков, Рауф Садыкович; International Symposium “Nanostructures: Physics and Technology”(28th ; Sept 28 - Oct 2, 2020 ; Minsk, Republic of Belarus)
}
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10.


   
    Colossal magnetoresistance of FexMn1-xS magnetic semiconductors / G. A. Petrakovskii [et al.] // JETP Letters. - 1999. - Vol. 69, Is. 12. - P. 949-953, DOI 10.1134/1.568118. - Cited References: 8 . - ISSN 0021-3640
РУБ Physics, Multidisciplinary
Рубрики:
MANGANITES
Аннотация: The magnetic, electric, magnetoresistive, and structural properties are investigated in the sulfide solid solutions FexMn1-xS, which are based on the antiferromagnetic semiconductor alpha-MnS (the fcc NaCl lattice). Colossal negative magnetoresistance (delta(H)similar to-83% at 160 K for x similar to 0.29), comparable to that observed in La-Ca-Mn-O polycrystals and films (delta(H)similar to-90% at 100 K and 40 kOe), is observed in compounds with intermediate concentrations 0.26 x 0.4, corresponding to the region of incipient ferromagnetism. (C) 1999 American Institute of Physics. [S0021-3640(99)01212-8].

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Ryabinkina, L. I.; Рябинкина, Людмила Ивановна; Kiselev, N. I.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Bovina, A. F.; Бовина, Ася Федоровна; Abramova, G. M.; Абрамова, Галина Михайловна
}
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