L. Jiang, M. Zhou, L. Chien, und C. Niu. Proceedings of the 20th international joint conference on Artifical intelligence, Seite 1629--1634. Morgan Kaufmann Publishers Inc., (2007)
V. Jijkoun, M. Khalid, M. Marx, und M. de Rijke. Proceedings of the second workshop on Analytics for noisy unstructured text data, Seite 23--30. New York, NY, USA, ACM, (2008)