Sonko, E. hadji M., Mbéguéré, M., Diop, C., Niang, S., & Strande, L. (2014). Effect of hydraulic loading frequency on performance of planted drying beds for the treatment of faecal sludge. Journal of Water Sanitation and Hygiene for Development, 4(4), 633-641. https://doi.org/10.2166/washdev.2014.024