1. The solution of incorrectly formulated problems and the regularization method;Tikhonov;Dokl. Akad. Nauk SSSR,1963
2. The regularization of incorrectly formulated problems;Tikhonov;Dokl. Akad. Nauk SSSR,1963
3. Some incorrect problems of mathematical physics;Lavrent'ev,1962
4. Mathematical analysis — a special course;Shilov,1960
5. Some applications of functional analysis to mathematical physics;Sobolev,1950