Henry Raymond Reynolds
Meifeng Cai
Nagaratnam Sivakugan
W. G. Pariseau
W. Wittke
Symposium on Rock Mechanics University of Minnesota 1975.
Symposium on Rock Mechanics (16th 1975 Minneapolis)
Pierre Habib
Koehler S. Stout
H. G. Poulos
Mogi, Kiyoo
Symposium on Instrumentation and Apparatus for Soil and Rock, Lafayette, Ind. 1965
NATO Advanced Study Institute (1977 University of Karlsruhe)
Bernd Prange
Unknown Author
National Research Council (U.S.) Transportation Research Board
H.G Poulos