Polarimetric observations of the Galilean satellites near opposition in 2011 von S. V. Zaitsev, N. N. Kiselev, V. K. Rosenbush, F. P. Velichko, S. V. Kolesnikov, K. A. Antonyuk, V. N. Psarev

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Simulating peculiar X-shaped extragalactic radio sources von D. A. Lacatus, A. R. Paraschiv, O. Tesileanu

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Gravitational lens equation: critical solutions and magnification near folds and cusps von A. N. Alexandrov, S. M. Koval, V. I. Zhdanov

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Chandra observations of ten galaxy clusters von Iu. Babyk, O. Melnyk, A. Elyiv

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CCD photometry of some areas around the open cluster M45 von A. A. Savushkin, A. A. Shlyapnikov

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Digital version of the CrAO archive of spectral observations of the Sun, carried out with the KG-2 coronagraph von Yu. A. Fursiak

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Catalogue-atlas of photographic observations along Comet Liller's path von Yu. A. Fursiak, A. A. Shlyapnikov

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High-speed multicolour photometry with CMOS cameras von S. M. Pokhvala, B. E. Zhilyaev, V. M. Reshetnyk

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A Synthesis of Temporal Variations in Doppler Spectra Recorded at a Quasi-Vertical Incidence by the HF Doppler Radar with Spaced Receivers von V. F. Pushyn, L. F. Chornohor

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Evidence of the Earth's Inner Radiation Belts During the Low Solar and Geomagnetic Activity Obtained with the STEP-F Instrument von O. V. Dudnyk, O. V. Yakovliev

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Operator Method in the Problem of the H-Polarized Wave Diffraction by Two Semi-Infinite Gratings Placed in the Same Plane von Ye. Kaliberda, L. M. Lytvynenko, S. O. Poharskyi

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Pulsed Power to Microwaves Conversion in Nonlinear Transmission Lines von S. Y. Karelin, V. G. Korenev, V. B. Krasovitsky, A. N. Lebedenko, I. I. Magda, V. S. Mukhin, V. G. Sinitsin, N. V. Volovenko

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Investigation of the Spectrum of Zn I Atoms in the Triplet Rydberg States von M. L. Pohrebniak, S. P. Diubko, M. P. Perepechai, O. S. Kutsenko

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An Antenna Based on a Hybrid Metal–Dielectric Structure von D. V. Maiboroda, S. O. Poharskyi

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Finite groups with a system of generalized central elements von Shemetkova, Olga

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Non-contracting groups generated by (3,2)-automata von Davis, Nick, Elder, Murray, Reeves, Lawrence

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Algorithmic computation of principal posets using Maple and Python von Gąsiorek, Marcin, Simson, Daniel, Zając, Katarzyna

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Densities, submeasures and partitions of groups von Banakh, Taras, Protasov, Igor, Slobodianiuk, Sergiy

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On types of local deformations of quadratic forms von Bondarenko, Vitaliy M.

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Lattices of partial sums von Chiaselotti, Giampiero, Gentile, Tommaso, Oliverio, Paolo Antonio

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