* <cite id=ngai04>Ngai, T., Murcott, S. and R. Shrestha (2004). [http://web.mit.edu/watsan/Docs/Other%20Documents/KAF/Ngai%20-%20Asia%20Arsenic%20Network%20symposium%20paper%202004.pdf Kanchan Arsenic Filter (KAF) – Research and Implementation of an Appropriate Drinking Water Solution for Rural Nepal]. [Note: These tests were done on a plastic biosand filter]</cite>
* <cite id=palmateer97>Palmateer, G., Manz, D., Jurkovic, A., McInnis, R., Unger, S., Kwan, K. K. and B. Dudka (1997). [http://www.hydraid.org/pdf/BSF_PalmateerManz_ToxicantParasite_1999.pdf Toxicant and Parasite Challenge of Manz Intermittent Slow Sand Filter]. Environmental Toxicology, vol. 14, pp. 217- 225.</cite>
* <cite id=stauber06>Stauber, C., Elliot, M., Koksal, F., Ortiz, G., Liang, K., DiGiano, F., and M. Sobsey (2006). [http://www.hydraid.org/pdf/BSF_Bacteria_Stauberetal_2006.pdf Characterization of the Biosand Filter for Microbial E. coli Reductions from Household Drinking Water Under Controlled Laboratory and Field Use Conditions]. Water Science and Technology, Vol 54 No 3 pp 1-7.</cite>
* Cambodia Country Office. [http://www.wsp.org/sites/wsp.org/files/publications/WSP_biosand_cambodia.pdf Improving Household Drinking Water Quality: Use of BioSand Filters in Cambodia]. [http://www.wsp.org/ Water and Sanitation Program], May 2010.