1. L. E. Hulbert, ?Benchmark problems for three-dimensional fracture analysis,? J. Fract.,13, No. 1, 87?91 (1977).
2. S. N. Atluri, A. S. Kobayashi, R. S. Labbens, et al., ?A critical evaluation of numerical solutions to the ?Benchmark? surface-flaw problems,? Exp. Mech.,20, No. 8, 253?254 (1980).
3. ASME Boiler and Pressure Vessel Code Sec. XI, div. 1 (1977), p. 199.
4. E. M. Morozov and G. P. Nikishkov, Finite Element Method in Fracture Mechanics [in Russian], Nauka, Moscow (1980)
5. A. E. Andreikiv, Spatial Problems of Crack Theory [in Russian], Naukova Dumka, Kiev (1982).