1. S. L. Crouch and A. M. Starfield, Boundary Element Methods in Solid Mechanics (Allen and Unwin, London, 1983; Mir, Moscow, 1987).
2. M. A. Aleksidze, Solution of Boundary Problems by Expansion into a Nonorthogonal Series (Nauka, Moscow, 1978) [in Russian].
3. L. I. Slepyan, Mechanics of Cracks (Sudostroenie, Leningrad, 1990) [in Russian].
4. E. Alinansi, “Sull’integrazione Dell’equazione Differenzigle,” Ann. Mat. 2 (1), 1–51 (1899).
5. Ya. S. Uflyand, Integral Transformations in Problems of the Theory of Elasticity (Nauka, Leningrad, 1967) [in Russian].