@inbook { stratmann_das_20,
	title = {Das Studienportal der Universit{\"a}t Duisburg-Essen},
	booktitle = {Bildungsportale - Potenziale und Perspektiven netzbasierter Bildungsressourcen},
	year = {2007},
	publisher = {Oldenbourg},
	organization = {Oldenbourg},
	address = {M{\"u}nchen},
	author = {Stratmann, J{\"o}rg and Michael Kerres},
	editor = {Gaiser, Birgit and Hesse, Friedrich W. and Monika L{\"u}tke-Entrup}
}
