H. Lang, G. Wohlgenannt, and A. Weichselbraun. International Conference on Information Resources Management (Conf-IRM), Vienna, Austria, AIS, (2012)Forthcoming (accepted 6 February 2012).
M. Hearst. Proceedings of the 37th annual meeting of the Association for Computational
Linguistics on Computational Linguistics, page 3--10. Morristown, NJ, USA, Association for Computational Linguistics, (1999)