1. The Fractional Calculus: Theory and Applications of Differentiation and Integration to Arbitrary Order;Oldham,1974
2. Fractional Differential Equations;Podlubny,1999
3. Fractional Integrals and Derivatives Theory and Applications;Samko,1993
4. Theory and Application of Fractional Differential Equations;Kilbas,2006
5. Approximations of fractional integral and Caputo fractional derivatives;Odibat;Appl. Math. Comput.,2006