* General information about Settled sewarage [http://wwwwedc.ircwash.org/ ircwash.org]* General information [http://www.efm.leeds.ac.uk/CIVE/Sewerage http://www.efm.leedslboro.ac.uk/CIVE/Sewerage ]* General information [http://wedc.lboro.ac.uk http://wedc.lboro] .ac.uk ]
* [http://washdev.iwaponline.com/content/3/2/230 Challenges facing sanitation-provision partnerships for informal settlements: a South African case study].