1. D-NET Project, Istituto di Scienza e Tecnologie dell’Informazione, Centro Nazionale delle Ricerche,Pisa, Italy, ICM Research Centre, Warsaw, University of Bielefeld Library, Bielefeld, Germany and Department of Informatics, National and Kapodistrian University of Athens (Greece),
www.d-net.research-infrastructures.eu
2. Candela, L., Castelli, D., Ferro, N., Ioannidis, Y., Kou-Trika, G., Meghini, C., Pagano, P., Ross, S., Soergel, D., Agosti, M., Dobreva, M., Katifori, V., Schuldt, H.: The DELOS Digital Library Reference Model - Foundations for Digital Libraries. In: DELOS: a Network of Excellence on Digital Libraries (February 2008), ISSN 1818-8044, ISBN 2-912335-37-X
3. Candela, L., Manghi, P., Pagano, P.: An Architecture for Type-based Repository Systems. In: Proceedings of the Second Workshop on Foundations of Digital Libraries, in Conjunction with ECDL 2007, Budapest, Hungary, DELOS (2007)