1. The phenomena of rupture and flow in solids;Griffith;Phil. Trans. R. Soc., Scr. A,1920
2. Analysis of stresses and strain near the end of a crack transversing a plate;Irwin;J. Appl. Mech.,1957
3. Limit Equilibrium State of Cracked Brittle Solids;Panasyuk,1968
4. Methods of Evaluation of the Crack Propagation Resistance- Properties of Structural Materials;Panasyuk,1977
5. Brittle Fracture Mechanics;Cherepanov,1974