Institution: | 1.Sternberg Astronomical Institute,Moscow,Russia;2.Institute of Astronomy,Russian Academy of Sciences (INASAN),Moscow,Russia;3.Giessen-Friedberg University of Applied Sciences,Friedberg,Germany;4.Institute of Astrophysics,Tajik Academy of Sciences,Dushanbe,Tajikistan;5.Main Astronomical Observatory,National Academy of Sciences of Ukraine,Kiev,Ukraine |