Norbert Fuhr, Mounia Lalmas, Saadia Malik, Zoltán Szlávik: Advances in XML Information Retrieval, Third International Workshop of the Initiative for the Evaluation of XML Retrieval, INEX 2004, Dagstuhl Castle, Germany, December 6-8, 2004, Revised Selected Papers. Lecture Notes in Computer Science 3493, Springer 2005, ISBN 3-540-26166-4