@inbook {9875,
	title = {Lehrer-Online {\textendash} Ein Bildungsportal f{\"u}r die Schule},
	booktitle = {Bildungsportal {\textendash} Potenziale und Perspektiven netzbasierter Bildungsressourcen},
	year = {2007},
	pages = {125 - 140 },
	publisher = {Oldenbourg},
	organization = {Oldenbourg},
	address = {M{\"u}nchen },
	author = {Heinen, R.},
	editor = {Gaiser, B. and Hesse, F. and Monika L{\"u}tke-Entrup}
}
