1. The axial and lateral load bearing capacity, and the failure by buckling of piles in soft clay;Bergfelt;Proc. 4th ICSMFE,1957
2. Foundation Analysis and Design;Bolows,1968
3. Lateral resistance of piles in cohesive soils;Broms;Proc. ASCE,1964
4. Discussion on “Lateral pile-loading tests”;Chan;Feagin, Trans.,1937
5. Analysis of pile groups with flexual resistance;Francis;Proc. ASCE,1964