Eberhard Zeidler ; translated by Leo F. Boront. Eberhard Zeidler ; translated by Leo F. Boron. Eberhard Zeidler ; translated by Author and by Leo F. Boront. Eberhard Zeidler ; translated by Juergen Quandt. Eberhard Zeidler ; translated by Peter R. Wadsack. Eberhard Zeidler ; translated by the author and by Leo F. Boront. by Theodor Schmelcher ; translated by Les. J. Croyston. Edouard Leve ; translated by Jan Steyn. Zhang Zhiming ; translated by Li Guoqing. A. V. Efimov ; Translated by Leonid Levant.