1. ASMEThe Surface Crack-Physical Problems and Computational Solutions (1972).
2. P. C. Paris and G. Sih, “Stress analysis of cracks”, in ASTM-STP, 381,Fracture Toughness Testing and its Applications (1964).
3. D.S. Dugdale, Journal of the Mechanics and Physics of Solids, 8 (1960) 100–104.
4. E. S. Folias, in Y. C. Fung and E. E. Sechler, eds.,Thin-Shell Structures, Prentice-Hall (1974).
5. B. Aamodt, P. C. Bergan and H. F. Klern, “Calculation of stress intensity factors and fatigue crack propagation of semi-elliptical part-through surface cracks”, Proceedings of 2nd International Conference Pressure Vessel Technology, ASME San Antonio (dy1973).