@InProceedings{MeKl2007b,
AUTHOR = {Merkel, Andreas and Klakow, Dietrich},
TITLE = {Comparing Improved Language Models for Sentence Retrieval in Question Answering},
YEAR = {2007},
BOOKTITLE = {Proceedings of Computational Linguistics in the Netherlands CLIN, Leuven},
NOTE = {DK} }
