1. Greywater reuse: towards sustainable water management;Al-Jayyousi;Desalination,2003
2. O uso eficiente da água em Portugal no sector urbano: que medidas e que estratégias de implementação? (in Portuguese);Almeida,2001
3. ETA 0905;ANQIP,2011
4. Standard Methods for the Examination of Water and Wastewater;AWWA-APHE-WPCF,1989
5. BS 8525–1:2010 Greywater systems — Part 1:code of practice;BSI,2010