Gottlob, Georg and Koch, Christoph and Baumgartner, Robert and Herzog, Marcus and Flesca, Sergio. 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. 1-12, ACM, Year 2004.