1. J. Hadamard, Probleme de Cauchy et equations aux derives partiels hyperboliques (Hermann, Paris, 1932).
2. E. V. Markova, Numerical Methods of Solution of Nonclassical Volterra Linear Equations of the First Kind and their Applications (Irkutsk, 1999) [in Russian].
3. A. N. Tikhonov and V. Y. Arsenin, Solutions of Ill-Posed Problems (Nauka, Moscow, 1979; Winston, Washington DC, 1977).
4. A. N. Tikhonov, A. V. Goncharsky, V. V. Stepanov, and A. G. Yagoda, Numerical Methods of Solution of Incorrect Problems (Nauka, Moscow, 1990) [in Russian].
5. A. O. Vatulyan, Inverse Problems in Mechanics of Deformable Solids (Fizmatlit, Moscow, 2007) [in Russian].