1. API Specification for Fabricated Structural Steel Pipe, Spec 2B,1977
2. Code for the Design, Construction and Installation of Fixed Offshore Structures;Canadian Standards Association;Preliminary Standard S473,1989
3. The compression behaviour of unstiffened fabricated tubes;Sato,1985
4. Experimental behavior of unstiffened fabricated tubular steel beam-columns;Prion,1991
5. Compression behaviour of unstiffened fabricated steel tubes;Birkemoe,1983