1. I. Roman et al., "The Effect of Cyclic Loading on the Apparent Cleavage Fracture Toughness of 1Cr-Mo-V Rotor Steel", Tech. Rep. EPRI NP-1023 (March 1979).
2. R.O. Ritchie and J. F. Knott, in Mechanics and Mechanisms of Crack Growth, Proceedings British Steel Corporation Conference, Cambridge (April 1973) 201?225.
3. C.J. Beevers, Metal Science 9 (1975) 119?126.
4. ASTM STP;W.F. Brown Jr.,1970
5. ASTM STP;J.G. Kaufman,1973