1. Oldham, K.B., and Spanier, J.: ‘The fractional calculus: integrations and differentiations of arbitrary order’, (Academic Press, New York 1974)
2. Podlubny, I.: ‘Fractional differential equations’, (Academic Press, San Diego 1999)
3. West, B.J., Bologna, M., and Grigolini, P.: ‘Physics of fractal operators’, (Springer-Verlag, New York 2003)
4. Lurie, B.J.: ‘Three-parameter tunable tilt-integral-derivative (TID) controller’, (US Patent US5371670)