Rangel Jiménez AE, Portilla Salazar CJ. The substitution process of heavy fuel oil with natural gas in the industrial sector of Valle del Cauca and Cauca – Colombia 2004-2012. Apuntes CENES [Internet]. 2016 Jan. 26 [cited 2024 Dec. 19];35(61):237-66. Available from: https://revistas.uptc.edu.co/index.php/cenes/article/view/4148