1. Adour-Garonne Water Agency. 1997. Atlas et donn�es sur l'eau. Toulouse.
2. 1997. Evolution longitudinale du phytoplancton dans la Garonne en p�riode d'�tiage estival: contribution des principaux affluents, CILEF 5 Congress (Belgium). Facultes universitaires Notre-Dame de la Paix: Namur.
3. 1982. Eutropication of Waters. Monitoring, Assessment and Control. Organisation for Economic Co-operation and Development: Paris.
4. APHA.AWWA.WPCF. 1992. Standard methods for the examination of water and wastewater (18th edition); Washington.
5. 1971. Ecology of the diatom community of the upper East Gallatin River, Montana, with in situ experiments on effect of current velocity on features of the Aufwuchs. PhD dissertation, Montana State University, Bozeman.