Martínez, C., C. García, R. Mindiola, Z. Lugo, and O. Nava. “Management of the Process of Tariff Adjustments in Oil Contractors Companies”. Impacto Científico, Vol. 12, no. 2, Jan. 2021, pp. 11-21, https://produccioncientificaluz.org/index.php/impacto/article/view/35009.