1. G. A. COTTELL, “Lessons to be Learnt from Failures in Service”. Int. Conf. on Fatigue of Metals, Inst. Mech. Engrs. (1956) 563. See also Brit. Engine Boiler and Electrical Insurance Co., Ltd., Manchester, Tech. Rpt. New Series 2 (1954) 221; 3, (1957) 91.
2. Handbook of Expt. Stress Analysis. John Wiley and Sons, New York. Chapman and Hall, London. (1950).
3. C. W. ORR, “The Detection of Fatigue Cracks”. Symposium The Failure of Metals by Fatigue. Melbourne Univ. Press (1946) 95.
4. “Fatigue Crack Detection Methods”;DEMER,1955
5. “Non-Destructive Testing”;MCLEOD;Iron and Steel,1955