Affiliation: | (1) Institute of Applied Physics, Russian Academy of Sciences, ul. Ul’yanova 46, Nizhni Novgorod, 603600, Russia;(2) Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, 369167, Karachai-Cherkessian Republic, Russia;(3) Research Radiophysics Institute, Nizhni Novgorod, Russia |