1. I. Podlubny, Fractional Differential
Equations (Acad. Press, San Diego, 1999) [Ser. Mathematics in Science and Engineering].
2. A. I. Prilepko, D. G. Orlovsky, and I. A. Vasin, Methods for Solving Inverse Problems in Mathematical Physics
(Marcel Dekker, New York, 2000).
3. A. M. Nakhushev, Elements of Fractional
Calculus and Their Application (Kabardino-Balkar Sci. Center, Nalchik, 2000;
Fizmatgiz, Moscow, 2003) [in Russian].
4. A. Kilbas, H. M. Srivastava, and J. J. Trujillo, Theory and Applications of Fractional Differential Equations
(Elsevier, Amsterdam, 2006).
5. K. Diethelm, The Analysis of Fractional
Differential Equations (Springer, Berlin, 2010).