Text book:

               Nonlinear Systems

               H. K. Khalil; Prentice Hall, 3rd edition, 2002

   References:

             Applied Nonlinear Control

             J. J. Slotine and w. Li; Prentice Hall, 1st edition 1990.

             Nonlinear Systems Analysis

             M. Vidyasagar; Prentice Hall, 2nd edition, 1992.

             Nonlinear Control Systemts

             A. Isidori; Springer Verlag, 3rd edition, 1997.