1. Tikhonov, A.N. and Samarskii, A.A., Uravneniya matematicheskoi fiziki (Equations of Mathematical Physics), Moscow: Izd. Moskov. Gos. Univ., 1999.
2. Lavrent’ev, M.M., Romanov, V.G., and Shishatskii, S.P., Nekorrektnye zadachi matematicheskoi fiziki i analiza (Ill-Posed Problems of Mathematical Physics and Analysis), Moscow: Nauka, 1980.
3. Romanov, V.G., Obratnye zadachi matematicheskoi fiziki (Inverse Problems of Mathematical Physics), Moscow: Nauka, 1984.
4. Denisov, A.M., Vvedenie v teoriyu obratnykh zadach (Introduction to Theory of Inverse Problems), Moscow, 1994.
5. Prilepko, A.I., Orlovsky, D.G., and Vasin, I.V., Methods for Solving Inverse Problems in Mathematical Physics, New York, 2000.