J. Schmidt, H. Sehring, M. Skusa, und A. Wienberg. Proceedings of the Fifth East-European Conference on Advances in Databases and Information Systems, Volume 2151 von Lecture Notes in Computer Science, Springer, (2001)
S. Wong, W. Ziarko, und P. Wong. Proceedings of the 8th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Seite 18-25. ACM Press, (1985)
B. Davison. Proceedings of the 26th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Seite 367-368. ACM Press, (2003)
C. Crouch, S. Apte, und H. Bapat. INitiative for the Evaluation of XML Retrieval (INEX). Proceedings of the First INEX Workshop. Dagstuhl, Germany, December 8-11, 2002, Seite 95-98. Sophia Antipolis, France, ERCIM, (März 2002)
W. Cavnar, und J. Trenkle. Proceedings of SDAIR-94, 3rd Annual Symposium on Document Analysis and Information Retrieval, Seite 161--175. Las Vegas, US, (1994)