1. On specifications for strength of iron bridges;Wilson;ASCE,1886
2. Flat sheet metal girders with very thin metal web;Wagner;z flugtechn motorluftschiffahrt,1929
3. Strength of plate girders in shear;Basler;Proc. ASCE,1961
4. American Institute of Steel Construction (AISC). Specification for the design, fabrication and erection of structural steel for building, sixth ed. New York, 1963.
5. American Association of State Highway Officials (AASHO). Standard specifications for highway bridges, eleventh ed. Washington, D.C., 1973.