1. R. Abell, M. Thieme, E. Dinnerstein, and D. Olson (2002 ) A Sourcebook for Conducting Biological Assessments and Developing Biodiversity Visions for Ecoregion Conservation. Volume II: Freshwater Ecoregions . World Wildlife Fund, Washington, DC: Island Press, 201 pp.
2. Biodiversity Conservation in Running Waters
3. L.T. Costa, J.C. Farinha, N. Hecker, and P. Tomas Vives eds (1996 ) Mediterranean Wetland Inventory, Volume 1: A Reference Manual . Lisboa, Portugal: Antunes & Amilcar, Lda, 55 pp.
4. L.M. Cowardin, V. Carter, F.C. Golet, and E.T. LaRoe (1979 ) Classification of Wetlands and Deepwater Habits of the United States . Washington DC: ESDI Fish and Wildlife Service, FWS/OBS-79/31, 103 pp.
5. M.F. Heath, and M.I. Evans (2000 ) Important Bird Areas in Europe: Priority Sites for Conservation , 2 vols. Cambridge, UK: BirdLife International, 1600 pp.