Overview of the CLEF-2006 Cross-Language Speech Retrieval Track. In: Evaluation of Multilingual and Multi-modal Information retrieval. 7th Workshop of the Cross-language Evaluation Forum, CLEF 2006, Revised Selected Papers, Lecture Notes in Computer Science, ISSN 0302-9743, 4730, pp. 744-758, Springer, Berlin / Heidelberg, ISBN 978-3-540-74998-1 (bibtex)