1. Stafford Smith.B and Carter.C., Proceedings of the Institution of Civil Engineers,44(1969)31 -48
2. Mainstone R.J, Proceedings of the Institution of Civil Engineers, Supplementary 48(z570, 1971.
3. Kadir, M.R.A., Ph.D. thesis, University of Edinburgh, 1974.
4. Riddington J.R., The;Stafford Smith.B and,;Structural Engineer,1978
5. T. Paulay.T, Priestley. M.J.N, John Wiley & Sons, New York, 1992