1. Baptist MJ, Dankers N, Smit C (2007) The outstanding universal values of the Waddenzee: an ecological perspective. Wageningen IMARES report C037/07, Wageningen
2. Barendregt A, Swarth CW (2013) Tidal freshwater wetlands: variation and changes. Estuar Coasts 36(3):445–456
3. Beintema N (2017) Gedoogbeleid ganzen is mislukt. NRC.nl 10-04-2017. https://www.nrc.nl/nieuws/2017/03/10/gedoogbeleid-ganzen-is-mislukt-7296400-a1549774 . Accessed 23 May 2017
4. Berendse F (2011) Natuur in Nederland. Stichting uitgeverij KNNV, Zeist
5. BirdLife International (2004) Birds in Europe: population estimates, trends and conservation status. BirdLife International, Cambridge