* Lohri, C. (2009b). [https://www.eawag.ch/fileadmin/Domain1/Abteilungen/sandec/publikationen/SWM/Anaerobic_Digestion/Lohri_2010.pdf Evaluation of Biogas Sanitation Systems in Nepalese Prisons]. Eawag (Department Sandec), Dübendorf and ICRC, Geneva, CH.
* Mang, H.-P. and Li, Z. (2010). [https://www.susana.org/en/knowledge-hub/resources-and-publications/library/details/877 Technology Review of Biogas Sanitation. Draft – Biogas Sanitation for Blackwater, Brown Water, or for Excreta Treatment and Reuse in Developing Countries]. Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, Eschborn, DE.:Available at: [http://www.susana.org/library susana.org/library]
* Vögeli, Y., Lohri, C. R., Gallardo, A., Diener, S. and Zurbrügg, C. (2014). [https://www.susana.org/en/knowledge-hub/resources-and-publications/library/details/2999 Anaerobic Digestion of Biowaste in Developing Countries. Practical Information and Case Studies]. Eawag (Department Sandec), Dübendorf, CH.:Available at: [http://www.sandec.ch sandec.ch]
===Acknowledgements===
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