@inbook {822,
	title = {Monitoring with Lichens - Monitoring Lichens},
	booktitle = {Nato Sciences },
	year = {2002},
	pages = {285-290},
	publisher = {Kluwer},
	organization = {Kluwer},
	chapter = {Epiphytes on wayside trees as an indicator of eutrophication in the Netherlands},
	address = {Dordrecht},
	author = {Van Herk, C.M. and Nimis, P.L. (Eds) and Scheidegger, C. (Eds) and Wolseley, P.A.}
}
