Institution: | (1) Institute of Astronomy, Russian Academy of Sciences, ul.Pyatnitskaya 48, Moscow, 119017, Russia;(2) St. Petersburg State University (Petrodvorets Branch), Universitetskiĭ pr.2, Petrodvorets, 198904, Russia;(3) Physics Department, Moscow State University, Vorob’evy Gory, Moscow, 119899, Russia |