1. American Iron and Steel Institute. Cold-formed steel back-to-back header assembly tests. Publication RG-9719, Washington, DC, 1997.
2. American Society for Testing and Materials. Standard test methods and definitions for mechanical testing of steel products, ASTM, A370-96, 1996.
3. North American Specification for the Design of Cold-Formed Steel Structural Members. Review document. American Iron and Steel Institute, Washington, DC, 5 November 2001.
4. Prescriptive Method for Residential Cold-Formed Steel Framing. North American Steel Framing Alliance, Washington, DC, 2000.
5. Standard for Cold-Formed Steel Framing, Header Design. American Iron and Steel Institute, Washington, DC, 2000.