The strength of "undisturbed" clay determined from undrained tests / by Charles C. Ladd and T. William Lambe.
Ladd, Charles C. (Charles Cushing)
Lambe, T. William.
American Society for Testing and Materials.
National Research Council of Canada.
Massachusetts Institute of Technology. Department of Civil Engineering.
Symposium on Laboratory Shear Testing of Soils (1963 : Ottawa)
July 1963