[by] N. V. TSederberg. Translation by Scripta Technica. Edited by Robert D. Cess. edited by A. A. Sveshnikov ; translated by Scripta Technica, Inc. ; edited by Bernard R. Gelbaum. by V. V. Penkovskii. [Translated by Scripta Technica inc., Washington, D. C.] [by] L. S. Palatnik and A. I. Landau. Translated by Scripta Technica, inc. Edited by Joseph Joffe.