1. Annotations in digital libraries and collaboratories – facets, models and usage;Agosti,2004
2. Cadiz, J., Gupta, A., & Grudin, J. (2000). Using web annotations for asynchronous collaboration around documents. In: Proceedings of the 2000 ACM conference on computer supported cooperative work.
3. What makes students click: working memory and look-up behavior;Chunl;System,2004
4. Denoue, L., & Vignollet, L. (2000). An annotation tool for web browsers and its applications to information retrieval. In: Proceedings of RIAO2000. http://citeseer.ist.psu.edu/denoue00annotation.html Accessed 08.06.05.
5. Denoue, L., & Vignollet, L. (2002). Annotations in the wild. In: Proceedings of the ECAI2002 workshop on semantic authoring, annotation and knowledge markup. http://sunsite.informatik.rwth-aachen.de/Publications/CEUR-WS//Vol-100/Laurent_Denoue-et-al.pdf Accessed 08.06.05.