Helmut Kratzsch ; translated by R.F.S. Fleming. J. Pitrat ; translated by E.F. Harding. by Helmut Tributsch ; translated by Miriam Varon. G.P. K鑟nnen ; translated by G.A. Beerling. Gottfried Khothe ; translated by D.J.H. Garling. C.G. Jung ; translated by R.F.C. Hull. Shang-Keng Ma ; translated by M.K. Fung.