Changes

* Deegener, S., Samwel, M. and Gabizon, S. (2006). [https://www.susana.org/en/knowledge-hub/resources-and-publications/library/details/430 Urine Diverting Toilets. Principles, Operation and Construction]. Women in Europe for a Common Future, Utrecht, NL and Munich, DE.:Available at: [http://www.wecf.de wecf.de] (Photos and explanation of how to build a double vault and superstructure)

* Rieck, C., von Münch, E. and Hoffmann, H. (2012). [https://www.susana.org/en/knowledge-hub/resources-and-publications/library/details/874 Technology Review of Urine-Diverting Dry Toilets (UDDTs)]. Overview of Design, Operation, Management and Costs. Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, Eschborn, DE.:Available at: [http://www.susana.org/library susana.org/library]

* Winblad, U. and Simpson-Hébert, M. (Eds.) (2004). [http://www.ecosanres.org/pdf_files/Ecological_Sanitation_2004.pdf Ecological Sanitation. Revised and Enlarged Edition]. Stockholm Environment Institute, Stockholm, SE.:Available at: [http://www.ecosanres.org ecosanres.org] (A general description of various designs and adaptations, especially Chapter 3)

* WHO (2006). [https://www.who.int/water_sanitation_health/publications/gsuweg4/en/ Guidelines for the Safe Use of Wastewater, Excreta and Greywater. Volume 4: Excreta and Greywater Use in Agriculture]. World Health Organization, Geneva, CH.:Available at: [http://www.who.int who.int]