1. On the stability of converse problems;Tikhonov;Dokl. Akad. Nauk SSSR,1943
2. On some ill-posed problems of mathematical physics;Lavrent'ev,1962
3. On the solutions of ill-posed problems and the method of regularization;Tikhonov;Dokl. Akad. Nauk SSSR,1963
4. On the regularization of ill-posed problems;Tikhonov;Dokl. Akad. Nauk SSSR,1963
5. On determination of the thicknesses of a two-layer earth's core by using regularizing algorithms;Savarenskii;Izv. Akad. Nauk SSSR, Fiz., Zemli,1971