1. Ma, Y., Audibert, L., Nazarenko, A.: Ontologies étendues pour l’annotation sémantique. In 20es Journées Francophones d’Ingénierie des Connaissances (2009, May)
2. Sojka, P.: Exploiting semantic annotations in math information retrieval. In: Proceedings of the Fifth Workshop on Exploiting Semantic Annotations In Information Retrieval. ACM (2012, November)
3. Kristianto, G.Y., Topić, G., Nghiem, M.Q., Aizawa, A.: Annotating scientific papers for mathematical formula search. In: Proceedings of the Fifth Workshop On Exploiting Semantic Annotations in Information Retrieval. ACM (2012, November)
4. Doush, I.A., Alkhateeb, F., Maghayreh, E.A., Alsmadi, I., Samarah, S.: Annotations, Collaborative Tagging, and Searching Mathematics in E-Learning. arXiv preprint arXiv:1211.1780 (2012)
5. RDFa Primer: Bridging the Human and Data Webs, http://www.w3.org/TR/xhtml-rdfa-primer/ (2010)