by TOVMASSIAN, H. M, HOVHANNESSIAN, R. KH, EPREMIAN, R. A, HUGUENIN, D, KHODJAYANTS, YU. M, KRMOYAN, M. N, KASHIN, A. L, ALEXANDROV, A. P, ROMANENKO, YU. V
Published in Astrophysics and space science (01.02.1992)

by TOVMASSIAN, H. M, HOVHANESSIAN, R. KH, EFREMIAN, R. A, KHODJAYANTS, YU. M, KRMOYAN, M. N, KASHIN, L. A, HUGUENIN, D, ROMANENKO, YU, ALEXANDROV, A. P
Published in Astrophysics and space science (01.05.1990)