WIKINDX is a free bibliographic and quotations/notes management and article authoring system designed either for single use (on a variety of operating sytems) or multi-user collaborative use across the internet.
G. Sautter, and K. Böhm. Proceedings of the Second International Conference on Theory and Practice of Digital Libraries, page 370--382. Berlin, Heidelberg, Springer-Verlag, (2012)
P. Haase, M. Ehrig, A. Hotho, and B. Schnizler. Peer-to-Peer and SemanticWeb, Decentralized Management and Exchange of Knowledge and Information, Springer, (2006)
P. Haase, M. Ehrig, A. Hotho, and B. Schnizler. Proceedings of the AAAI Workshop on Semantic Web Personalization, 2004, page 1-12. AAAI Press, (July 2004)