1. M. M. Lavrent’ev, V. G. Romanov, and V. G. Vasil’ev, Multidimensional Inverse Problems for Differential Equations (Nauka, Novosibirsk, 1969) [in Russian].
2. V. Isakov, Inverse Source Problems (Am. Math. Soc., Providence, R.I., 1990).
3. A. M. Denisov, Elements of the Theory of Inverse Problems (VSP, Utrecht, 1999).
4. A. I. Prilepko, D. G. Orlovsky, and I. A. Vasin, Methods for Solving Inverse Problems in Mathematical Physics (Marcel Dekker, New York, 2000).
5. S. I. Kabanikhin, Inverse and Ill-Posed Problems (Sibirskoe Nauchnoe, Novosibirsk, 2008) [in Russian].