by Davydov A.B, Meschkova T.A, Solodovnik V.D, Luschkov A.M, Kraeva N.K, Schtschebekino, Sedvald A.K, Lipea J.B, Udrovskij G.A, Viestur U.E, Kalninja M.F, Laukevic J.J
Year of Publication 1978