1. Jahn , S.A.A. Traditional Water Purification in Tropical Developing Countries---Existing Methods and Potential Application. Publ. 117. Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ) GmbH, Eschborn 1981
2. Soliz Rodrigues , J.E. Utilización de productos nativos para la clarificación de aguas de consumo. Proyecto de grado, Universidad Mayor de San Andres, Facultad de Tecnología, La Paz, Bolivia 1984
3. Studies on Natural Coagulants in the Sudan With Special Reference to Moringa oleifera Seeds.;Jahn;Water SA.,1979
4. A synopsis of the Moringaceae.;Verdcourt;Kew Bull.,1985
5. Effectiveness of Traditional Flocculants as Primary Coagulants and Coagulant Aids for the Treatment of Tropical Raw Water With a More Than Thousand-fold Fluctuation in Turbidity.;Jahn;Water Supply,1984