TY JOUR TI Parameters of binary systems in 0235+164, 0528+134 and 0954+658 blazars KW blazars KW active galactic nucleus KW black holes JO Infocommunications and Radio Technologies AU Volvach, L.N. AU Volvach, A.E. AU Larionov, M.G. PY 2018 IS 1 PB Federal State Educational Institution of Higher Education Sevastopol State University