Hansen, Henrik K., Adrián Rojo, and Claudia Gutiérrez. “A New Process for Sustainable Wastewater Treatment in Chilean Copper Smelters”. European Journal of Sustainable Development 5, no. 3 (October 1, 2016): 159. Accessed May 8, 2024. https://ojs.ecsdev.org/index.php/ejsd/article/view/342.