by SAVINOV A.M, POLUNIN G.A, LEONOV A.JA, SHPARBERG E.M, BOL'SHAKOV O.V
Year of Publication 27.08.1996

by POLUNIN G.A, LEONOV A.JA, VOLONCHUK S.K, SHPARBERG E.M, BUZDIN A.I, BOGATYREV A.N, BOL'SHAKOV O.V
Year of Publication 27.04.1997