@article {2006,
	title = {Beneficial effects of the growth of metal tolerant grass on biological and chemical parameters in copper and zinc contaminated sandy soils},
	year = {2001},
	pages = {9-26},
	author = {Bouwman, L. A and Bloem, J and Romkens, P. F. A. M and Boon, G. T and Vangronsveld, J}
}
