Pérez-Molina, J. P., Scholz, C., Pérez-Salazar, R., Alfaro-Chinchilla, C., Abarca Méndez, A., Araya Leitón, L., … Solís Calderón, C. (2021). Spatial variation of physicochemical parameters in a constructed wetland for wastewater treatment: An example of the use of the R programming language . UNED Research Journal, 13(1), e3294. https://doi.org/10.22458/urj.v13i1.3294