1. Beams on Elastic Foundations;Hetenyi,1946
2. Elastic instability of struts on, or driven into, elastic foundation;Al-Sarraf;Struct. Engr,1978
3. An Introduction to the Elastic Stability of Structures;Simitscs,1976
4. On the buckling of a column in an clastic medium;Teodorescu;Int. J. engng Sci.,1981
5. Exact stiff matrix for beams on elastic foundation;Eisenberger;Comput. Struct.,1985