1. M. P. Savruk, Two-Dimensional Problems of the Theory of Elasticity for Bodies with Cracks [in Russian], Naukova Dumka, Kiev (1981).
2. N. I. Muskhelishvili, Some Basic Problems of Mathematical Theory of Elasticity [in Russian], Nauka, Moscow (1966).
3. F. D. Gakhov, Boundary-Value Problems [in Russian], Nauka, Moscow (1977).
4. P. R. Johnston, “Application of sigmoidal transformations to weakly singular and near-singular boundary elements integrals,” Int. J. Numer. Meth. Eng., 45, 1333–1348 (1999).
5. M. P. Savruk, P. N. Osiv, and I. V. Prokopchuk, Numerical Analysis in Plane Problems of the Theory of Cracks [in Russian], Naukova Dumka, Kiev (1989).