1. The Pressuremeter and Foundation Engineering;Baguelin;Trans Tech Publications, Rockport, Mass.,1978
2. Cavity expansion in sands with curved envelopes;Baligh;Proc. ASCE,1976
3. Field tests on piles in sand;Committee;Soils and Foundations,1971
4. Discussion, Cavity expansion in sands with curved envelopes;Billam;Proc. ASCE,1977
5. The strength and dilatancy of sands;Bolton;Geotechnique,1986