@article {824,
	title = {Effects of grass-encroachment on vegetation and soil in Dutch dry dune grasslands},
	volume = {192},
	year = {1998},
	pages = {119-128},
	author = {Veer, M.A.C. and Kooijman, A. M.}
}
@article {649,
	title = {Nutrient limitations and their implications on the effects of atmospheric deposition in coastal dunes; lime-poor and lime- rich sites in the Netherlands.},
	volume = {86(3)},
	year = {1998},
	pages = {511-526},
	author = {Kooijman, A. M. and Dopheide, J.C.R. and Sevink, J. and Takken, I. and Verstraten, J. M.}
}
