[by] R. Paul., Translated by Scripta Technica Ltd., English translation edited by D. Llanwyn-Jones. by I. V. Butusov. Translated by G. Segal. English translation edited by R. C. Glass. V.I. Arnold ; translated by Joseph Szèucs ; English translation edited by Mark Levi. V.I. Arnold ; translated by Joseph Szücs ; English translation edited by Mark Levi. V.I. Arnold ; translated by Joseph Sz鑥cs ; English translation edited by Mark Levi. V.V. Nalimov ; Translated by Prasenjit Basu. English translation editor: M. Williams.