@article {Graaf2002,
	title = {Short-term and long-term facilitation of goose grazing by livestock in the Dutch Wadden Sea area},
	journal = {Journal of Coastal Conservation},
	volume = {8},
	year = {2002},
	pages = {179{\textendash}188},
	keywords = {barnacle geese, branta, branta bernicla bernicla, dark-bellied brent goose, herbivory, leucopsis, polder, salt},
	url = {http://link.springer.com/article/10.1652/1400-0350(2002)008[0179:SALFOG]2.0.CO;2},
	author = {der Graaf, AJ Van and Bos, D}
}
