Suárez-Corredor, A. F., & Jiménez-López, F. R. (2010). Control system upgrading for the hopper filling process units I, II and III in the Paipa Thermoelectric Company. Universidad Pedagógica y Tecnológica de Colombia - UPTC.
Παραπομπή σε μορφή Chicago (17η εκδ.)Suárez-Corredor, Andrés Felipe, και Fabián Rolando Jiménez-López. Control System Upgrading for the Hopper Filling Process Units I, II and III in the Paipa Thermoelectric Company. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2010.
Παραπομπή σε μορφή MLA (9th εκδ.)Suárez-Corredor, Andrés Felipe, και Fabián Rolando Jiménez-López. Control System Upgrading for the Hopper Filling Process Units I, II and III in the Paipa Thermoelectric Company. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2010.