1. Miller K.S., Ross B.: An Introductional the Fractional Calculus and Fractional Differential Equations. Academic Press, New York, London (1974)
2. Oldham K.B., Spanier J.: The Fractional Calculus. Academic, New York (1974)
3. Kilbas A.A., Srivastava H.M., Trujillo J.J.: Theory and Applications of Fractional Differential Equations. Elsevier, Amsterdam (2006)
4. Oldham, K.B., Spanier, J.: The Fractional Calculus: Theory and Application of Differentiation and Integration to Arbitrary Order. Academic Press, New York (1974)
5. Podlubny I.: Fractional Differential Equations. Academic Press, San Diego (1999)