@article{articlef1396342,
title   = {Household slow sand filters with and without water level control: continuous and intermittent flow efficiencies},
author = {Maciel, Paulo Marcos Faria and Sabogal-Paz, Lyda Patricia},
year = {2020},
doi = {10.1080/09593330.2018.1515988},
journal   = {Environmental Technology}
}