Study of stacks of HTS-2 tapes as the main element of high-current superconducting wires for large-scale electromagnetic systems V. E. Sytnikov, V. V. Zubko, K. R. Vlaskin, S. S. Fetisov, S. Yu. Zanegin, I. V. Krivetskiy, D. S. Dezhin 5-19 Review of surface and thin film processing by gas cluster ion irradiation A. V. Nazarov, D. S. Kireev, A. E. Ieshkin, D. R. Bessmertnyi, I. N. Kutlusurin, V. S. Chernysh 20-47 Modeling and optimization of a cryocooler regenerative heat exchanger for systems based on high-temperature superconductors N. A. Maksimov, R. G. Batulin, A.V. Kutergin 49-59 Features of the tunneling conductance of break-junctions in underdoped BaFe2-xNixAs2 single crystals I. A. Nikitchenkov, A. D. Lomonosova, S. A. Kuzmichev, K. S. Pervakov, V. A. Vlasenko 60-73 Features of the properties of the pseudogap state in HTSC cuprates V. I. Kuz’min, S. G. Ovchinnikov, T. M. Ovchinnikova 75-81 Emergence of three-level superconductivity during annealing of YBCO + ε-Fe2O3 D. M. Gokhfeld, S. V. Semenov, M. I. Petrov 82-89 Analysis of the zero-field cooled magnetic moment of a highly compressed La2SmNi2O7 single crystal A. V. Korolev, E. F. Talantsev 90-101 Telegram journal group