1. ‘The phenomena of rupture and flow in solids’;Griffith;Phil Trans Royal Soc London Series A,1920
2. ‘Plastic flow and rupture of metals’;Zener;Trans ASM,1944
3. Paris P C and Sih G C: ‘Stress analysis of cracks’ in Fracture Toughness Testing and its Applications, ASTM Special Technical Publication No. 381 ASTM 1965.
4. Practical Fracture Mechanics for Structural Steel;Hahn,1969
5. Beachem C D and Pelloux R M N: ‘Electron fractography’ in ASTM STP No 381 ASTM 1965.