TY - CHAP A1 - Sigel, W. A1 - Busse, Susanne A1 - Kutsche, R.-D. A1 - Klettke, M. ED - James, Anne T1 - Designing a Metadata-based Infrastructure for E-Learning T2 - Engineering federated information systems : proceedings of the 5th Workshop EFIS 2003, July 17 - 18, 2003, Coventry (UK) Y1 - 2003 SN - 978-3-89838-041-6 (AKA), 3-89838-041-6 (AKA) SN - 978-1-58603-359-0 (IOS Press) , 1-58603-359-X (IOS Press) SP - 89 EP - 99 PB - AKA ; IOS Press CY - Berlin ; Amsterdam ER -