Isaza Roldán, Cesar, and Nelson Jara Cobo. 2015. “Comparative Analysis of Domestic Refrigeration Systems Using R600a and R134a Refrigerants”. I+ T+ C- Research, Technology and Science 1 (9). Popayán, CO:7-15. https://revistas.unicomfacauca.edu.co/ojs/index.php/itc/article/view/itc2015_pag_7-15.