Ferdinand Oker
R. A. Durie
Chun - Zhu Li
Martin Baumert
J. E. Pahlman
M. E. Dorsey
Ronald H. Affolter
Karl Metzold
Friedrich Raefler
University of North Dakota. Engineering Experiment Station
Herbert Krüger
C. F. Zincken
W. R. Kaiser
Charles R. Meissner
Karl Lorenz
Carla Gruas-Cavagnetto
Norman O. Frederiksen
George Mercer Dawson
Odo Gerbig