1. Campbell, E., 2005. Study on Life Span of Ceramic Filter Colloidal Silver Pot Shaped (CSP) Model, Managua, Nicaragua.
2. Comparative Analysis of the Filtron and Biosand Water Filters;Duke,2006
3. Fahlin, C.J., 2003. Hydraulic Properties Investigation of the Potters for Peace Colloidal Silver Impregnated, Ceramic Filter. University of Colorado at Boulder College of Engineering.
4. Hwang, R.E.Y., 2003. Six-month field monitoring of point-of-use ceramic water filter by using H2S paper strip most probable number method in San Francisco Libre, Nicaragua. B.Sc. Thesis, Massachusetts Institute of Technology.
5. Lantagne, D.S., 2001a. Investigation of the Potters for Peace Colloidal Silver Impregnated Ceramic Filter, Report 1: Intrinsic Effectiveness. Alethia Environmental, Allston.