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.
J. Abernethy, O. Chapelle, and C. Castillo. Proceedings of the 4th International Workshop on Adversarial Information Retrieval on the Web, page 41--44. New York, NY, USA, ACM, (2008)