@article {227,
	title = {Zeigerwerte von Pflanzen in Mitteleuropa},
	journal = {Scripta Geobotanica},
	volume = {18},
	year = {1991},
	pages = {1-248},
	author = {Ellenberg, H. and Weber, H.E. and Dull, R. and Wirth, V. and Werner, W. and Pauli{\ss}en, D.}
}
