Castro Echavez, F. L., N. M. Fernández Acosta, and M. J. Chávez Delgado. “Diminution of the COD in Formation Waters Using Bacterial Stocks”. Rev. Téc. Fac. Ing. Univ. Zulia, Vol. 31, no. 3, 1, https://mail.produccioncientificaluz.org/index.php/tecnica/article/view/6357.