1. Fractional Integrals and Derivatives: Theory and Applications;Samko,1993
2. Fractional Differential Equations;Podlubny,1999
3. Theory and Application of Fractional Differential Equations;Kilbas,2006
4. An Introduction to the Fractional Differential Equations;Miller,1993
5. On differentiation with arbitrary index;Sonin;Mosc. Matem. Sbornik.,1869