1. Solution of incorrectly posed problems and the method of regularization;Tikhonov;Dokl. Akad. Nauk SSSR,1963
2. Regularization of incorrectly posed problems;Tikhonov;Dokl. Akad. Nauk SSSR,1963
3. Nonlinear equations of the first kind;Tikhonov;Dokl. Akad. Nauk SSSR,1965