by F. Csaki ; [translated by B. Balkay]. by Ervin Szèucs ; [translated by B. Balkay]. by Guszt鈇v Tarj鈇n ; [translated by B. Balkay]. Ern頾 Nemecz ; [translated by B. Balkay] by W. Marxsen ; translated by G. Buswell. by Wu Minxian ; translated by Li Xiaona. by J.E. Pin ; translated by A. Howie. by Felix Klein ; translated by M. Ackerman. by R. Courant. Translated by E. F. McShane. by J. P. Mathieu ; translated by J. Warren Blaker.