O.V. Kovalev ; tr. from the Russianby A. Murray Gross. V.A. Kovalevsky ; tr. from the Russian by Arthur Brown. V. Alexeyev ; tr. from the Russian by E. Uuarov. V.V. Nekrasov ; tr. from the Russian by Alexander Eosinkin. N. Rykalin ; tr. from the Russian by O. Glebov. P. Bidulya ; tr. from the Russian by A. Troitsky. G.V. Samsonov ; tr from the Russian by Z.S. Michalewicz. A.S. Kompaneyets ; tr. from the Russian by V. Talmy. H.D. Ikramov ; tr. from the Russian by OLeg Efimov. J. Leja. ; tr. from the Russian by E. Koltsova.