1. Sih, G. C., ed., Method of analysis and solutions of crack problems, Noordhoff International Publishing, Leyden (1973).
2. Nisitani, H., Two-dimensional problem solved using a digital computer, Journal of the Japan Society of Mechanical Engineers, 70, 580, pp. 627–635 (1967).
3. Nisitani, H. and Murakami, Y., Stress intensity factors of an elliptical crack or a semi-elliptical crack subject to tension, International Journal of Fracture, 10, 3, pp. 353–368 (1974).
4. Timoshenko, S. P. and Goodier, J. N., Theory of elasticity, McGraw-Hill Book Company, New York (1951).
5. Eshelby, J. D., Elastic inclusions and inhomogeneities, Progress in Solid Mechanics, Edited by I. N. Sneddon and R. Hill, 2, North-Holland Publishing Company, Amsterdam, pp. 89–140 (1961).