K. J. Nyman

Evaluation of cased and uncased gas distribution and transmission piping under railroads and highways, Phase 2. Annual report, November 1987

T. D. O'Rourke, Harry E. Stewart, A. R. Ingraffea, 1987 .

Soil restraint against horizontal motion of pipes

K. J. Nyman, J.M.E. Audibert, J. Audibert, 1977 .