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    Weak localization and size effects in thin In2O3 films prepared by autowave oxidation / I. A. Tambasov [et al.] // Physica E. - 2016. - Vol. 84. - P. 162-167, DOI 10.1016/j.physe.2016.06.005. - Cited References:70. - This study was supported by the Russian Foundation for Basic Research (Grants # 16-32-00302 MOJI_a, # 15-02-00948-A, # 16-03-00069-A), by the Council for Grants of the President of the Russian Federation (SP-317.2015.1), and by the Program of Foundation for Promotion of Small Enterprises in Science and Technology (No. 6662 Gamma Y2015, 9607 Gamma Y/2015) ("UMNIK" Program). Electron microscopic studies were performed on the equipment of CCU KSC SB RAS. . - ISSN 1386-9477. - ISSN 1873-1759
   Перевод заглавия: Слабая локализация и размерные эффекты в тонких пленках In2O3 приготовленные автоволновым окислением

РУБ Nanoscience & Nanotechnology + Physics, Condensed Matter
Рубрики:
SOLID-STATE SYNTHESIS
   INDIUM TIN OXIDE
   DOPED ZNO FILMS
   OPTICAL-PROPERTIES
   MAGNETIC-FIELD
   NEGATIVE MAGNETORESISTANCE
   CARBON NANOTUBES
   TEMPERATURE
   SEMICONDUCTOR
   TRANSPORT
Кл.слова (ненормированные):
Thin indium oxide films -- Weak localization -- Electron-electron -- interaction -- Disordered semiconductors -- Nanostructured films -- Phase-coherent length
Аннотация: The negative magnetoresistance of thin In2O3 films, obtained by an autowave oxidation reaction, was detected within a temperature range of 4.2-80 K. The magnetoresistance was -1.35% at a temperature of 4.2 K and an external magnetic field of 1 T. A weak localization theory was used to explain the negative magnetoresistance and to determine the phase-coherence length in a temperature range of 4.2-80 K. The phase-coherence length was found to oscillate as the temperatures increased to around 30 K. From the maximum and minimum values of the oscillation of the phase-coherence length, it was suggested that the In2O3 film has two structure characteristic parameters. Transmission electron microscopy showed the structure of the thin In2O3 film to have structural features of a crystal phase- amorphous phase. It was found that the crystalline phase characteristic size was consistent with the maximum phase-coherence length and the amorphous phase characteristic size was consistent with the minimum phase-coherence length. It has been suggested that the temperature measurements of the magnetoresistance and the theory of weak localization can be used to evaluate the structural features of nanocomposite or nanostructured thin films. (C) 2016 Elsevier B.V. All rights reserved.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Akademgorodok 50, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Svobodny Prospect 79, Krasnoyarsk 660041, Russia.
Reshetnev Siberian State Aerosp Univ, Krasnoyarsk Worker 31, Krasnoyarsk 660014, Russia.

Доп.точки доступа:
Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Tarasov, A. S.; Тарасов, Антон Сергеевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Rautskii, M. V.; Рауцкий, Михаил Владимирович; Myagkov, V. G.; Мягков, Виктор Григорьевич; Bykova, L. E.; Быкова, Людмила Евгеньевна; Zhigalov, V. S.; Жигалов, Виктор Степанович; Matsynin, A. A.; Мацынин, Алексей Александрович; Tambasova, E. V.; Russian Foundation for Basic Research [16-32-00302 MOJI_a, 15-02-00948-A, 16-03-00069-A]; Council for Grants of the President of the Russian Federation [SP-317.2015.1]; Program of Foundation for Promotion of Small Enterprises in Science and Technology ("UMNIK" Program) [6662GammaY2015, 9607GammaY/2015]
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Vortex pinning and magnetic peak effect in Eu(Eu,Ba)2.125Cu3Ox / E. Altin [et al.] // J. Mater. Sci.-Mater. Electron. - 2014. - Vol. 25, Is. 3. - P. 1466-1473, DOI 10.1007/s10854-014-1753-1. - Cited References: 30 . - ISSN 0957-4522. - ISSN 1573-482X

РУБ Engineering, Electrical & Electronic + Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter
Рубрики:
SUPERCONDUCTORS
   FIELD
   NANOCRYSTALLINE
   TEMPERATURE
   LOOP
Аннотация: Eu–Ba–Cu–O composition was synthesized by solid state reaction technique. To determine optimum growth temperature, heat treatment was examined on the material at 880–1,100 °C. Microstructural evolution, phase formation and elemental distribution depending on heat treatments were examined by using X-ray diffraction, scanning electron microscope, energy dispersive X-ray spectroscope analysis. Optimum fabrication conditions were determined as 1,020 °C for 24 h under oxygen atmosphere and detailed characterization of corresponding compound was performed. The magnetization hysteresis loops are expounded to be the product of superconducting Eu-123 grains and magnetic Eu2+ ions. The peak effect on the magnetization curves was described by the extended critical state model. Scaling of the pinning force was found such that the peak position is proportional to the irreversibility field H irr and the maximum pinning force is proportional to H irr 2 .

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Держатели документа:
Inonu Univ, Bilimsel & Teknolojik Arastirma Merkezi, TR-44280 Malatya, Turkey
LV Kirensky Inst Phys SB RAS, Krasnoyarsk 660036, Russia
Inonu Univ, Fen Edebiyat Fak, Fizik Bolumu, Superiletkenlik Arastirma Grubu, TR-44280 Malatya, Turkey

Доп.точки доступа:
Altin, E.; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Demirel, S.; Oz, E.; Kurt, F.; Altin, S.; Yakinci, M.E.
}
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Balaev, D. A.
Tunnel Conductivity and Tunnel Magnetoresistance of the Fe-SiO Films: Interplay of the Magnetotransport and Magnetic Properties / D. A. Balaev, A. D. Balaev // Phys. Solid State. - 2019. - Vol. 61, Is. 7. - P. 1203-1210, DOI 10.1134/S1063783419070047. - Cited References: 48 . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
GIANT MAGNETORESISTANCE
   GRANULAR FILMS
   TEMPERATURE
   TRANSPORT
Аннотация: The electrical properties of a system of nanogranular amorphous Fe–SiO films with a SiO concentration between 0 and 92 vol % have been investigated. The samples with a low SiO content are characterized by the metal-type conductivity. With an increase in the dielectric content x in the films, the concentration transition from the metal to tunneling conductivity occurs at x ≈ 0.6. At the same concentration, the ferromagnet–superparamagnet transition is observed, which was previously investigated by the magnetic method. The temperature dependences of the electrical resistivity ρ(T) for the compositions corresponding to the dielectric region obey the law ρ(T) ~ exp(2(C/kT)1/2), which is typical of the tunneling conductivity. The estimation of the metal grain sizes from the tunneling activation energy C has shown good agreement with the sizes obtained previously by analyzing the magnetic properties. In the dielectric region of the compositions, the giant magnetoresistive effect attaining 25% at low temperatures has been obtained.

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Публикация на русском языке

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Krasnoyarsk Sci Ctr, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Balaev, A. D.; Балаев, Александр Дмитриевич; Балаев, Дмитрий Александрович
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Transition of metastable pyrrhotites to a stable phase state / V. V. Onufrienok, A. V. Chzhan, G. V. Bondarenko, G. Y. Yurkin // Inorg. Mater. - 2020. - Vol. 56, Is. 9. - P. 898-902, DOI 10.1134/S0020168520090137. - Cited References: 23 . - ISSN 0020-1685. - ISSN 1608-3172

РУБ Materials Science, Multidisciplinary
Рубрики:
MAGNETIC-PROPERTIES
TEMPERATURE
CHEMISTRY
Кл.слова (ненормированные):
mineral -- pyrite -- troilite -- impurity centers -- magnetization
Аннотация: Equilibrium phase relations of synthetic minerals prepared by annealing metastable iron sulfides, followed by prolonged isothermal storage in the Earth atmosphere, have been studied by X-ray diffraction. The results demonstrate that prolonged storage of synthetic pyrrhotites annealed at different temperatures makes it possible to identify metastable and stable phases of Fe and S compounds.

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Публикация на русском языке Переход метастабильных пирротинов в стабильное фазовое состояние [Текст] / В. В. Онуфриенок, А. В. Чжан, Г. В. Бондаренко, Г. Ю. Юркин // Неорган. матер. - 2020. - Т. 56 № 9. - С. 948-952

Держатели документа:
Krasnoyarsk State Agr Univ, Krasnoyarsk 660049, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Onufrienok, V. V.; Chzhan, A. V.; Bondarenko, G. V.; Yurkin, G. Yu.; Юркин, Глеб Юрьевич
}
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The magnetic-field-driven effect of microwave detection in a manganite granular system / N. V. Volkov [et al.] // J. Phys. D. - 2008. - Vol. 41, Is. 1. - Ст. 15004, DOI 10.1088/0022-3727/41/1/015004. - Cited References: 24 . - ISSN 0022-3727

РУБ Physics, Applied
Рубрики:
IDENTICAL METALS
   TUNNEL-JUNCTIONS
   MAGNETORESISTANCE
   RECTIFICATION
   SPINTRONICS
   TEMPERATURE
   PEROVSKITES
Кл.слова (ненормированные):
Bias currents -- Curie temperature -- Electric power generation -- Granular materials -- Magnetic field effects -- Microwave irradiation -- Voltage measurement -- Direct current voltage -- Magnetic tunnel junctions -- Metal insulator metal junctions -- Nonmagnetic metals -- Manganites
Аннотация: We demonstrate the microwave detection effect in a granular La0.7Ca0.3MnO3 sample. Dc voltage generated by the sample in response to microwave irradiation below the Curie temperature is found to be dependent on the applied magnetic field. The magnetic field dependence of the dc voltage has a broad peak resembling an absorption line. The detection effect depends substantially on the magnetic history of the sample; however, identical measurement conditions provide reproducibility of the experimental results. The detected dc voltage increases linearly with microwave power and strongly depends on a bias current through the sample. According to the results of systematic measurements, there exist two contributions to a value of the detected output signal. The first is magneto-independent; it can be explained in the framework of a mechanism used traditionally for description of the rectification effect in metal-insulator-metal junctions with nonmagnetic metals. The other is magneto-dependent; it originates from the interplay between the spin-dependent current through magnetic tunnel junctions and spin dynamics of the grains, which form these junctions in the sample.

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Держатели документа:
[Volkov, N. V.
Eremin, E. V.
Shaykhutdinov, K. A.
Tsikalov, V. S.
Petrov, M. I.
Balaev, D. A.
Semenov, S. V.] Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
[Volkov, N. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660041, Russian Federation

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Eremin, E. V.; Еремин, Евгений Владимирович; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Tsikalov, V. S.; Petrov, M. I.; Петров, Михаил Иванович; Balaev, D. A.; Балаев, Дмитрий Александрович; Semenov, S. V.; Семенов, Сергей Васильевич
}
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Gavrichkov, V. A.
The band structure of n-type cuprate superconductors with the T '(T) structure taking into account strong electron correlation / V. A. Gavrichkov, S. G. Ovchinnikov // J. Exp. Theor. Phys. - 2004. - Vol. 98, Is. 3. - P. 556-564, DOI 10.1134/1.1705708. - Cited References: 18. - This work was financially supported by the Russian Foundation for Basic Research (project no. 03-02-16124), RFFI-KKFN “Eniseœ” (project no. 02-02-97705), INTAS (project no. 01-0654), integration program of URO and Siberian Division, Russian Academy of Sciences . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
QUASI-PARTICLES
   COPPER OXIDES
   TEMPERATURE
   LA2-XSRXCUO4
   ND2-XCEXCUO4
   EVOLUTION
   MOMENTS
Кл.слова (ненормированные):
Dielectric properties -- Electric conductance -- Electron transitions -- Electronic structure -- Fermi level -- Phase diagrams -- Semiconductor doping -- Conduction bands -- Electron correlation -- Spectral density -- Superconducting materials
Аннотация: The spectral density, dispersion relations, and the position of the Fermi level for n-doped compositions based on NCO and LCO were calculated within the framework of the generalized tight binding method. As distinguished from LCO, the dielectric gap in NCO is nonlinear in character. We observe a virtual level both at the bottom of the conduction band and at the top of the valence band in both compounds. However, its position corresponds to the extreme bottom of the conduction band in LCO and is 0.1 - 0.2 eV above the bottom in NCO. This explains why we observe Fermi level pinning in n-LCO as the concentration of the doping component grows and reproduce its absence in NCCO at low doping values. We also found both compositions to be unstable in a narrow concentration range with respect to a nonuniform charge density distribution. The relation between the phase diagram for NCCO and the calculated electronic structure is discussed. (C) 2004 MAIK "Nauka/Interperiodica".

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Публикация на русском языке Гавричков, Владимир Александрович. Зонная структура купратных сверхпроводников n-типа с T'(T)-структурой при учете сильных электронных корреляций [Текст] / В. А. Гавричков, С. Г. Овчинников // Журн. эксперим. и теор. физ. - 2004. - Т. 125 Вып. 3. - С. 630-639

Держатели документа:
Russian Acad Sci, Siberian Div, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Гавричков, Владимир Александрович
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Synthesis and study of structural, thermodynamic, and magnetic properties of NaxLi1–xFeGe2O6 (x = 0.1–0.9) compounds / T. V. Drokina [et al.] // Phys. Solid State. - 2016. - Vol. 58, Is. 7. - P. 1361-1370, DOI 10.1134/S1063783416070143. - Cited References: 20 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
CLINOPYROXENE-TYPE LiFeGe2O6
   PHASE-TRANSITION
   PYROXENES
   TEMPERATURE
   LiFeSi2O6
   CRYSTAL
Аннотация: The properties of NaxLi1–xFeGe2O6 (x = 0.1–0.9) solid solutions obtained via a solid-phase synthesis have been measured by X-ray diffraction, calorimetry, and magnetic method. The order–disorder transformations in low-dimensional NaxLi1–xFeGe2O6 (x = 0.1–0.9) spin systems with predominately antiferromagnetic exchange interaction have been revealed in the low-temperature susceptibility dependences. The study of thermal and physical properties has confirmed that substituting the sodium ions with the lithium ones induces the first-order structural phase transitions of the displacement type which are characterized by a symmetry change in monoclinic crystals from high-temperature C2/c space group to low-temperature P21/c space group. © 2016, Pleiades Publishing, Ltd.

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Публикация на русском языке Синтез и исследование структурных, термодинамических и магнитных особенностей соединений NaxLi1-xFeGe2O6 (x=0.1-0.9) [Текст] / Т. В. Дрокина [и др.] // Физ. тверд. тела : Физико-технический институт им. А. Ф. Иоффе РАН, 2016. - Т. 58 Вып. 7. - С. 1316–1324

Держатели документа:
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50-38, Krasnoyarsk, Russian Federation
Far Eastern State Transport University, ul. Serysheva 47, Khabarovsk, Russian Federation
Siberian Federal University, pr. Svobodnyi 79, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Drokina, T. V.; Дрокина, Тамара Васильевна; Petrakovskii, G. A.; Петраковский, Герман Антонович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич
}
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Synthesis and structural properties of cubic G0-Rb2KMoO3F3 oxyfluoride / V. V. Atuchin [et al.] // Ceram. Int. - 2012. - Vol. 38, Is. 3. - P. 2455-2459, DOI 10.1016/j.ceramint.2011.11.013. - Cited References: 23. - This study was partly supported by RFBR (Grant 09-02-00062) and SB RAS (Grant 34). . - ISSN 0272-8842

РУБ Materials Science, Ceramics
Рубрики:
PHASE-TRANSITIONS
   FERROELECTRIC K3WO3F3
   (NH4)(3)MOO3F3
   TEMPERATURE
   PEROVSKITE
   ELPASOLITE
   CRYSTALS
   BEHAVIOR
   High temperature
   Melt solidification
   Micromorphologies
   Melt solidification
   Microstructure-final
   Oxyfluorides
   Space Groups
   Oxyfluorides
   X ray methods
Кл.слова (ненормированные):
Powders: solid state reaction -- Microstructure-final -- X-ray methods -- Alkali oxides -- Halides
Аннотация: High-temperature G0 polymorph of Rb2KMoO3F3 has been prepared by melt solidification. Micromorphology and chemical properties of the final product were evaluated by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The elpasolite-related crystal structure of G0-Rb2KMoO3F3 has been refined by Rietveld method at T = 298 K (space group Fm-3m, a = 8.92446(8) Å, V = 710.76(1) Å3; RB = 3.55%). Ferroelectric G1-Rb2KMoO3F3 polymorph, earlier reported at T˂328 K, is not found at T = 298 K.

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Держатели документа:
[Atuchin, V. V.] SB RAS, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090 90, Russia
[Gavrilova, T. A.] SB RAS, Inst Semicond Phys, Lab Nanolithog & Nanodiagnost, Novosibirsk 630090 90, Russia
[Isaenko, L. I.
Zhurkov, S. A.] SB RAS, Inst Geol & Mineral, Lab Crystal Growth, Novosibirsk 530090 90, Russia
[Kesler, V. G.] SB RAS, Inst Semicond Phys, Lab Phys Principles Integrated Microelect, Novosibirsk 630090 90, Russia
[Molokeev, M. S.] SB RAS, Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036 36, Russia

Доп.точки доступа:
Atuchin, V. V.; Gavrilova, T. A.; Isaenko, L. I.; Kesler, V. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhurkov, S. A.
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Synthesis and luminescence properties of Li2O–Y2O3–TeO2:Eu3+ tellurite glass / V. V. Atuchin [et al.] // Mater. Chem. Phys. - 2014. - Vol. 147, Is. 3. - P. 1191-1194, DOI 10.1016/j.matchemphys.2014.07.003. - Cited References: 26. - This study is partly supported by the Ministry of Education and Science of the Russian Federation. . - ISSN 0254-0584. - ISSN 1879-3312

РУБ Materials Science, Multidisciplinary
Рубрики:
LIGHT-EMITTING-DIODES
   SPECTROSCOPIC PROPERTIES
   OPTICAL-PROPERTIES
   ENERGY-TRANSFER
   CERAMICS
   Eu3+
   PHOTOLUMINESCENCE
   TEMPERATURE
   EMISSION
   PHOSPHOR
Кл.слова (ненормированные):
Glasses -- Heat treatment -- Photoluminescence spectroscopy -- Optical properties
Аннотация: The Eu3+-doped red-orange emitting phosphor of tellurite glass 0.25Li2O–0.20Y2O3–0.5TeO2–0.05Eu2O3 has been synthesized by the melt quenching method. The amorphous nature of the glass has been verified by XRD measurements. The photoluminescence excitation and emission spectra, the luminescence decay curves have been investigated for the composition. The phosphor can be efficiently excited by the near UV light to realize the intense narrow red emission line (611 nm) corresponding to forced electric dipole transition 5D0 → 7F2 of Eu3+ ions. The Li2O–Y2O3–TeO2:Eu3+glass phosphor is a potential red-orange emitting candidate for the application in WLEDs.

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Держатели документа:
SB RAS, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090, Russia
Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia
Novosibirsk State Univ, Lab Semicond & Dielect Mat, Novosibirsk 630090, Russia
SB RAS, Inst Geol & Mineral, Lab High Pressure Minerals & Diamond Deposits, Novosibirsk 630090, Russia
Novosibirsk State Univ, Dept Appl Phys, Novosibirsk 630090, Russia
SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Atuchin, V. V.; Yelisseyev, A. P.; Galashov, E. N.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Ministry of Education and Science of the Russian Federation
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10.

Khrustalev, B. P.
Superparamagnetism in Fe-SiO nanocluster films / B. P. Khrustalev, A. D. Balaev, V. M. Sosnin // Fiz. Tverd. Tela. - 1995. - Vol. 37, Is. 6. - P. 1676-1686. - Cited References: 30 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
ELECTRICAL-PROPERTIES
TEMPERATURE

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Доп.точки доступа:
Balaev, A. D.; Балаев, Александр Дмитриевич; Sosnin, V. M.; Соснин, Виктор Михайлович; Хрусталев, Борис Петрович
}
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