Carrera, D., Crisanto, T., Guevara, P., & Maya, M. (2015). Relationship between the inorganic chemical composition of water, precipitation and evaporation in the basin of Rio Grande, Chone, Ecuador. Enfoque UTE, 6(1), pp. 25 – 34. https://doi.org/10.29019/enfoqueute.v6n1.52