R. Yan, C. Huang, J. Tang, Y. Zhang, und X. Li. Proceedings of the 12th ACM/IEEE-CS joint conference on Digital Libraries, Seite 51--60. New York, NY, USA, ACM, (2012)
T. Zesch, und I. Gurevych. Proceedings of the TextGraphs-2 Workshop (NAACL-HLT), Seite 1--8. Rochester, Association for Computational Linguistics, (April 2007)