1. Hildebrand, F. B. and Reissner, E., Least work analysis of the problem of shear lag in box beams. NACA Technical Note 893, 1940.
2. Winter, G., Stress distribution in and equivalent width of flanges of wide, thin–wall steel beams. NACA Technical Note No.784, 1940.
3. Shear lag in tension panels and box beams;Tate,1950
4. British Standards Institition,B.S.5950:PT 5. 1987, Code of Practice For Design of Cold Formed Sections. BSI, London. 1987.