1. On the solution of incorrectly posed problems and the method of regularization;Tikhonov;Dokl. Akad. Nauk SSSR,1963
2. On some incorrectly posed problems of mathematical physics;Lavrent'ev,1962
3. On incorrectly posed problems;Ivanov;Matem. Sb.,1963
4. A technique for the numerical solution of certain integral equations of the first kind;Phillips;J. Assoc. Comput. Machinery,1962
5. Method of quasi-reversibility: applications to partial differential equations;Lattes,1968