A. Ledovsky ; [translated from the Russian by Nadezhda Burova]. Rostislav Ulyanovsky ; translated from the Russian by Nadezhda Burova. I. Weinberg; translated from the Russian by N. Komissarova. V. A. Kovalevsky ; translated from the Russian by Arthur Brown. N.N.Lebedev ; translated from the Russian by A.Beknazarov. S. V. Zonn ; translated from the Russian by Maya Victorova. L.A. Rastrigin ; translated from the Russian by Michael Burov. M. Postnikov ; translated from the Russian by Vladimir Shokurov. V.V. Petrov ; translated from the Russian by A.A. Brown. V. Kudrin ; translated from the Russian by V. Afanasyev.