1. Tikhonov A. N. 1935, “Teorema edinstvennosti dlia uravneniia teploprovodnosti”, Math. sbornik, vol. 42. no. 2. pp. 199–216, [in Russian].
2. Tikhonov A. N. 1943, “Ob ustoichivosti obratnykh zadach”, Reports USSR Acad. Sci., vol. 39. no. 5. pp. 195–198, [in Russian].
3. Tikhonov A. N. 1963, “O reguliarizatcii nekorrektno postavlennykh zadach”, Reports USSR Acad. Sci., no. 1. pp. 49–52, [in Russian].
4. Tikhonov A. N. 1963, “O reshenii nekorrektno postavlennykh zadach i metode reguliarizatcii”, Reports USSR Acad. Sci., no. 3. pp. 501–504, [in Russian].
5. Tikhonov A. N. & Arsenin V.Ya. 1986, “Metody resheniia nekorrektnykh zadach”, Nauka, Мoscow, 256 p., [in Russian].