by Karitskaya, E A, Voloshina, I B, Goranskii, V P, Grankin, K N, Dzhaniashvili, E B, Ezhkova, O V, Kochiashvili, N T, Kumsiashvili, M I, Kusakin, A V, Lyutyi, V M, Mel'nikov, S Yu, Metlova, N V
Published in Astronomy reports (01.05.2001)