1. The Fractional Calculus;Oldham,1974
2. Fractional Integrals and Derivatives and Some of their Applications;Samko,1987
3. An Introduction to the Fractional Calculus and Fractional Differential Equations;Miller,1993
4. I. Podlubny, Fractional-order systems and fractional-order controllers, Technical Report UEF-03-94, Slovak Academy of Sciences. Institute of Experimental Physics, Department of Control Engineering, Faculty of Mining University of Technology, Kosice, November 1994.
5. B.J. Lurie, Three-parameter tunable tilt-integral-derivative (TID) controller, US Patent US5371670, 1994.