Alcântara, T. C. de O., Silva, E. R. M. da, Siqueira, C. C. B. de, Fernandes, L. B., McCreanor, P. T. and Barbosa, I. C. da C. (2019) “Graywater reuse: case study of the efficiency of two types of intermittent sand filters in the treatment of synthetic gray water”, Ciência e Natura, 41, p. e33. doi: 10.5902/2179460X34335.