Fractional calculus: A survey of useful formulasD. Valério, J.J. Trujillo, M. Rivero, J.A.T. Machado and D. BaleanuEur. Phys. J. Special Topics, 222 8 (2013) 1827-1846DOI: https://doi.org/10.1140/epjst/e2013-01967-y