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3. 3) Lay, M.G. and Galambos, T.V.: Inelastic beams under uniform moment gradient, Journal of Structural Division, ASCE, Vol. 93, No. ST1, pp. 381-399, 1967.
4. 4) American Institute of Steel Construction (AISC), Specifications for structural steel buildings —load and resistance factor design (LRFD), Inc., Chicago, III, 1989.
5. 5) Yura, J.A., Galambos, T.V. and Ravindra, M.K.: The bending resistance of steel beams, Journal of Structural Engineering Division, ASCE, Vol. 104, No. 9, pp. 1355-1370, 1978.