1. Chemical analysis of ecological materials;Allen,1989
2. Standard methods for the examination of water and wastewater;American Public Health Association (APHA),1985
3. American Public Health Association (APHA), American Water Works Association (AWWA), Water Environment Federation (WEF). Standard methods for the examination of water and wastewater. 18th ed. Washington, DC: American Public Health Association; ISBN 0-87553-207-1, 1992, Public Office.
4. Factors limiting phytoplankton productivity in 49 shallow reservoirs of North Cote d'Ivoire (West Africa);Arfi;Aquat Ecosyst Health Manag,2001
5. The relative importance of fish predation and excretion effects on planktonic communities;Attayde;Limnol Oceanogr,2001