* <cite id=earwaker06>Earwaker, P. (2006). [http://ebookbrowse.com/earwaker-2006-evaluation-of-household-biosand-filters-in-ethiopia-pdf-d79191747 Evaluation of Household BioSand Filters in Ethiopia]. Master of Science thesis in Water Management (Community Water Supply). Institute of Water and Environment, Cranfield University, Silsoe, United Kingdom.</cite>
* Elliott, M., Stauber, C., Koksal, F., DiGiano, F., and M. Sobsey (2008). [http://www.hydraid.org/pdf/BSF_BacteriaViruses_Elliottetal_2008.pdf Reductions of E. coli, echovirus type 12 and bacteriophages in an intermittently operated 2 household-scale slow sand filter].Water Research, Volume 42, Issues 10-11, May 2008, Pages 2662-2670 begin_of_the_skype_highlighting 2662-2670 end_of_the_skype_highlighting begin_of_the_skype_highlighting 2662-2670 end_of_the_skype_highlighting.
* <cite id=ngai04>Ngai, T., Murcott, S. and R. Shrestha (2004). 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>