@Inproceedings{lenz2003wl, author = "Kirsten Lenz and Markus Gr{\"u}ne and Marco Mevius and Kirsten Keferstein and Gottfried Vossen and Andreas Oberweis", booktitle = "Wirtschaftsinformatik 2003: Medien - M{\"a}rkte - Mobilit{\"a}t", editor = "W. Uhr, W. Esswein, E. Schoop", month = "September", pages = "801-818", publisher = "Physica-Verlag", title = "Workflow-gest{\"u}tztes Lernobjekt-Management", volume = "1", year = "2003", }