1. EN 1993-1-3:2006 + AC:2009: Eurocode 3: Design of steel structures - Part 1-3: General rules - Supplementary rules for cold-formed members and sheeting
2. EN 1990:2002 + A1:2005 + A1:2005/AC:2010: Eurocode: Basis of structural design
3. Beshara , B. Schuster , R. M. Web crippling data and calibrations of cold formed steel members. Research Report RP00-2 Washington AISI 2000