Govea Franco, Ángeles Montserrat, Rubén Macías Acosta, and Miguél Ángel Oropeza Tagle. 2020. “Profitability of Petróleos Mexicanos: Determinants and Discussions on the Public Budget”. RAN - Revista Academia & Negocios 4 (2):47-60. https://revistas.udec.cl/index.php/ran/article/view/2551.