1. Nonlinear control of chemical processes: A review;Bequette;Industrial and Engineering Chemistry, Research,1991
2. Linear system theory and design;Chen,1984
3. Robust semi-global output tracking for singularly perturbed nonlinear systems;Christofides;International Journal of Control,1996
4. Methods of mathematical physics, vol. II;Courant,1962
5. El-Farra, N., & Christofides, P.D. (1999). Robust optimal control of nonlinear systems. Proceedings of the American Control Conference. San Diego, CA (p. 124).