Álvarez, Tomás, Rafael Codorniú, and Israel Pina. 2018. “PI and PID Temperature and Product Concentration Control in a Chemical Plant Producing Propilenglicol”. ITEGAM-JETIA 4 (14), 15-26. http://br940.teste.website/~itegamjetia/journal/index.php/jetia/article/view/25.