1. The brittle fracture story;Tipper,1962
2. Mathematical theory of elasticity;Love,1944
3. Muskhelishvili NI. Some basic problems of the mathematical theory of elasticity. 3rd ed. Moscow; 1949. Also Noordhoff, Groningen, Holland, 1853.
4. Timoshenko SP, Goodier JN. Theory of elasticity, 3rd ed., McGraw-Hill: New York; p. 1070.
5. Theoretical elasticity;Green,1968