1. J.F. Knott, Fundamentals of Fracture Mechanics, Butterworths, London (1973).
2. P.E.J. Flewitt, G.H. Williams and M.B. Wright, Nuclear Engineering 31 No. 5 (1992) 383?391.
3. I. Milne, R.A. Ainsworth, A.R. Dowling and A.T. Stewart, Assessment of the integrity of structures containing defects, CEGB Report R/H/R6 Rev.3 (1986).
4. A.H. Cottrell, ?The Griffith Crack?, Proceedings of the Griffith Centenary Meeting, The Institute of Metals (1993).
5. M.S. Kamath and M.F. Gittos, The Welding Institute Research Bulletin 114?122, April 1979.