N. J. Withers

Performance and analysis of cone pressuremeter tests in sands : Geotechnique V39, N3, Sept 1989, P433–454

John A. Howie, Peter K. Robertson, J.M.O. Hughes, 1990 .

REINFORCING OF SOFT COHESIVE SOILS WITH STONE COLUMNS

J.M.O. Hughes, N. J. Withers, J. Hughes, 1974 .