Werner Luttmann ... [et al.] Ronald D. Guttmann...[et al.] Robert G. Neumann ... [et al.]. Joan Swann ... [et al.] Kurt Heymann ...[et al.]. by Werner Braunig ...[et al.]. C. W. Borgmann ...[et al.]. J.A. Orlemann ... [et al.]. [Y. N. Luginsky ... et al.] edited by E. Gutmann ...[et al.].