1. Measurement of fracture initiation and propagation parameters from fracture kinematics;Venzi;Analytical and Experimental Fracture Mechanics,1980
2. Relationship between “Jl” and “a” during the whole crack propagation;Martinelli;Engng Fracture Mech.,1991
3. Some further results on J-integral analysis and estimates;Rice;ASTM STP,1973
4. Estimation of J-integral and tearing modulus T from a single specimen test record;Ernst;ASTM STP,1981