1. Hestenes, M. R.,Calculus of Variations and Optimal Control Theory, Wiley, New York, 1966.
2. Bryson, Jr. A. E. and Ho, Y. C.,Applied Optimal Control: Optimization, Estimation, and Control, Blaisdell, Waltham, Massachusetts, 1975.
3. Sage, A. P. and White, III, C. C.,Optimum Systems Control, Prentice-Hall, Englewood Cliffs, New Jersey, 1977.
4. Bagley, R. L. and Calico, R. A.,?Fractional order state equations for the control of viscoelastically damped structures?, Journal of Guidance, Control, and Dynamics14, 1991, 304?311.
5. Carpinteri, A. and Mainardi, F.,Fractals and Fractional Calculus in Continuum Mechanics, Springer-Verlag, Vienna, 1997.