1. AEWA. Agreement on the conservation of African-Eurasian Migratory Waterbirds AEWA; 1995; Den Hague, The Netherlands.
2. CBD. Convention on biological diversity; 1992; Rio de Janeiro.
3. European Union (1979) Council directive on the conservation of wild birds—Birds directive (79/409/EEC)
4. Improving biodiversity monitoring;DB Lindenmayer;Austral Ecology,2012
5. Monitoring of biological diversity in space and time;NG Yoccoz;Trends in Ecology & Evolution,2001