1. The American Society of Mechanical Engineers. A.S.M.E. boiler and pressure vessel code, Section XI, 1992, Rules for inservice inspection of nuclear power plant components; Appendix A, Analysis of flaws. Article IWA-3000, Standards for examination evaluation, and Article IGA-3000, Acceptance standards for flaw indications.
2. British Standards Institution, PD 6493 1991, Guidance on methods for assessing the acceptability of flaws in fusion welded joints, Section 8 and Fig. 6.
3. Estimating the interaction factors for two coplanar surface cracks under mode I load;Leek;Int. J. Pres. Ves. and Piping,1994
4. State of stress at the vertex of a quarter infinite crack in a half space;Benthem;Int. J. Solids Struct.,1977
5. Proc. Int. Conf. Mechanical Behaviour of Materials, Vol. 2, Fatigue of Materials;Koterazawa,1971