1. Emitter clogging – causes and prevention;Abbott;ICID Bulletin,1985
2. ACA, 2010. Fitxes de les estacions de depuració d’aigües residuals: Sistema de sanejament: Celrà. Agència Catalana de l’Aigua, Generalitat de Catalunya, Barcelona.
3. Mechanisms and process parameters of filter screens;Adin;Journal of Irrigation and Drainage Engineering-ASCE,1986
4. Particle filtration for wastewater irrigation;Adin;Journal of Irrigation and Drainage Engineering,1989
5. Strategic filter backwashing techniques and resulting particle passage;Amburgey;Journal of Environment Engineering,2005