P. A. Ioannou, J. Sun, Robust Adaptive Control, Prentice-Hall Inc., 1996.
2. K. J.Aström, B. Wittenmark, Adaptive Control, 2nd ed., Addison-Wesley Publishing Company Inc., 1995.
3. P.E. Wellstead and M.B.Zarrop, Self-Tuning Systems, Control and Signal Processing, John Wiley and Sons, 1991.
4. I.D. Landau, R. Lozano and M. M Saad, Adaptive Control, Springer verlag, 1998.