V. G. Rekach ; translated from the Russian by M. Konyaeva. Yu. N. Rabotnov ; translated from the Russian by M. Konyaeva. V. A. Fok ; translated from the Russian by N. Kemmer. A. Luikov ; translated from the Russian by T. Kortneva. M. Filonenko-Borodich. Translated from the Russian by M. Konyaeva. A. Luikov, translated from the russian by T. Koutneva. Translated from the Russian by M. Konyaeva. I. M. Yaglom ; translated from the Russian by I. G. Volosova. V. V. Naschokin ; translated from the Russian by S. Semyonov. N.M. Belyaev ; translated from the Russian by N.K. Mehta.