1. Elementary engineering fracture mechanics. Fourth revised;Broek,1986
2. On fracture toughness and its size dependence for steels showing thickness delamination;Markstrom;Eng Fract Mech,1972
3. The practical use of fracture mechanics;Broek,1989
4. Standard test method for plane-strain fracture toughness of metallic materials;ASTM Standard E399-90,1997
5. Standard test method for translaminar fracture toughness of laminated polymer matrix composite materials;ASTM Standard E1922–97,1997