1. [1] Slotine, J.-J., Li, W. Applied nonlinear control. Prentice-Hall, Englewood Cliffs, NJ, USA (1991).
2. [2] Sastry, S. Nonlinear systems analysis, stability, and control. Springer, Berlin, Germany (1999).
3. [3] Naidu, D. Optimal control systems. CRC Press, London, UK (2003).
4. [4] Lewis, F. L., Vrabie, D. L., Syrmos, V. L.: Optimal control. John Wiley & Sons, Hoboken, New Jersey (2012). doi: 10.1002/9781118122631.
5. [5] Navabi, M., Mirzaei, H. Robust optimal adaptive trajectory tracking control of quadrotor helicopter. Latin American Journal of Solids and Structures 14, 1040-1063 (2017). doi: 10.1590/1679-78253595.