1. K B Oldham and J Spanier, The fractional calculus (Academic Press, New York, 1974)
2. S Samko, A A Kilbas and O Marichev, Fractional integrals and derivatives: Theory and applications (Gordon and Breach Science, Switzerland, 1993)
3. I Podlubny, Fractional differential equations (Academic Press, New York, 1999)
4. A A Kilbas, H M Srivastava and J J Trujillo, Theory and applications of fractional differential equations (Elsevier, Amsterdam, 2006)
5. R Hilfer, Applications of fractional calculus in physics (World Scientific, Singapore, 2000)