Gottlob, G., Koch, C., Baumgartner, R., Herzog, M. & Flesca, S. (2004). The Lixto Data Extraction Project - Back and Forth between Theory and Practice. Proceedings of the Twenty-third ACM SIGACT-SIGMOD-SIGART Symposium
on Principles of Database Systems, June 14-16, 2004, Paris, France (p./pp. 1-12), : ACM. ISBN: 1-58113-858-X