Changes

* Berger, W. (2011). [https://www.susana.org/en/knowledge-hub/resources-and-publications/library/details/878 Technology Review of Composting Toilets. Basic Overview of Composting Toilets (with or without Urine Diversion)]. Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, Eschborn, DE.:Available at: [http://www.susana.org/library susana.org/library]

* Del Porto, D. and Steinfeld, C. (1999). The Composting Toilet System Book. A Practical Guide to Choosing, Planning and Maintaining Composting Toilet Systems, an Alternative to Sewer and Septic Systems(Book). The Center for Ecological Pollution Prevention (CEPP), Concord, MA, US.

* Hill, G. B., Baldwin, S. A. and Vinnerås, B. (2013). [http://sustainablesummits.org/wp-content/uploads/2017/07/Hill-Baldwin-Vinneras-2013-Composting-Toilets-Misnomer-PUB.pdf Composting Toilets a Misnomer: Excessive Ammonia from Urine Inhibits Microbial Activity yet Is Insufficient in Sanitizing the End-Product]. Journal of Environmental Management 119 (2013): 29-35.

* Jenkins, J. (2005). The Humanure Handbook. A Guide to Composting Human Manure(Book). 3rd Ed. Jenkins Publishing, Grove City, PA, US.

* U.S. EPA (1999). [https://nepis.epa.gov/Exe/ZyNET.exe/200044ES.TXT?ZyActionD=ZyDocument&Client=EPA&Index=1995+Thru+1999&Docs=&Query=&Time=&EndTime=&SearchMethod=1&TocRestrict=n&Toc=&TocEntry=&QField=&QFieldYear=&QFieldMonth=&QFieldDay=&IntQFieldOp=0&ExtQFieldOp=0&XmlQuery=&File=D%3A%5Czyfiles%5CIndex%20Data%5C95thru99%5CTxt%5C00000015%5C200044ES.txt&User=ANONYMOUS&Password=anonymous&SortMethod=h%7C-&MaximumDocuments=1&FuzzyDegree=0&ImageQuality=r75g8/r75g8/x150y150g16/i425&Display=hpfr&DefSeekPage=x&SearchBack=ZyActionL&Back=ZyActionS&BackDesc=Results%20page&MaximumPages=1&ZyEntry=1&SeekPage=x&ZyPURL Water Efficiency Technology Fact Sheet. Composting Toilets]. EPA 832-F-99-066. U.S. Environmental Protection Agency, Washington, D.C., US.:Available [https://www.epa.gov/sites/production/files/2015-06/documents/comp.pdf here]