Marín, J.C., López, A., Behling, E., Colina, G. and Fernández, N. 2010. Behavior of metals (Pb, Zn, Fe, Al and Ni) during coal mine drainages treatment in constructed wetlands. Revista Técnica de la Facultad de Ingeniería. Universidad del Zulia. 29, 2 (Nov. 2010).