1. Winter G, and Pian RHJ. Crushing strength of thin steel webs. Cornell Bulletin 35, Part 1, Cornell University, Ithaca, N.Y. 1946.
2. Elastic instability of flat plates subjected to partial edge loads;Zetlin;J Struct Div ASCE,1955
3. Post-buckling strength of thin-walled members;Lee;Comput Struct,1979
4. Web crippling strength of thin-walled steel members with web opening;Sivakumaran;Thin-Walled Struct,1989
5. Web crippling behaviour of nested Z-purlins;LaBoube;Eng Struct,1994