1. Coker, E. G., & Filon, E. G. (1957) A treatise on photo elasticity (2nd edn, p 253). Cambridge University Press.
2. Doyle, J. F., & Phillips, J. W. (1989) Manual on experimental stress analysis (5th edn, p 171). Society for Experimental Mechanics.
3. IS456–2000 (2000) Indian standard plain and reinforced concrete code of practice. New Delhi: Bureau of Indian Standards.
4. IS875–1987 (2000) Part 1 code of practise for design of load on building structures (other than earthquake load). New Delhi: Bureau of Indian Standards.
5. Leontovich, V. (1959). Frames and arches for reinforced works.