1. Linear control system analysis and design: conventional and modern;D’azzo,1975
2. Optimale lineare Regelung;Engell,1998
3. Engell, S.; Müller R. (1993). Multivariable Controller Design by Frequency Response Approximation. Proceedings of the 2nd European Control Conference, Volume 3, p. 1715-1720.
4. Faccin, F. (2004). Abordagem Inovadora no Projeto de Controladores PID. Masters dissertation, Chemical Eng. Department, Federal University of Rio Grande do Sul, Porto Alegre.
5. Faccin, F.; Trierweiler, J.O. (2004). A novel tool for multi-model PID controller design. 7th DYCOPS Symposium, Cambridge.