Pérez Salazar, R., C. Alfaro Chinchilla, J. Sasa Marín, and J. Agüero Pérez. “Performance Evaluation of an Alternative Artificial Wetlands System Used As Wastewater Treatment”. Uniciencia, Vol. 27, no. 1, Jan. 2013, pp. 332-40, https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/4958.