You seem to be attempting to access an item that has been removed from the repository.
The item you are trying to access was a duplicate of:
Trieschnigg, Dolf and Kraaij, Wessel and Schuemie, Martijn (2006) Concept based passage retrieval for genomics literature. In: Fifteenth Text REtrieval Conference, TREC 2006, November 14-17, 2006, Gaithersburg, MD, USA (pp. pp. 453-460).