1. ABNT NBR 14762. Steel structures design of cold-formed members. Associação Brasileira de Normas Técnicas, 2001 [in Portuguese].
2. The strength of thin plaates in compression;von Kármán;Trans ASME,1932
3. Strength of thin-walled compression flanges;Winter,1947
4. AISI S100-2007. North American specification for the design of cold-formed steel members. American Iron and Steel Institute, 2007.
5. EN 1993-1-3. Eurocode 3 – Design of steel structures – Part 1–3: General rules – supplementary rules for cold-formed members and sheeting, 2006.