Alexiei Dingli Fabio Ciravegna David Guthrie Yorick Wilks Mining Web Sites Using Unsupervised Adaptive Information Extraction. 75-78 2003 EACL http://acl.ldc.upenn.edu/E/E03/E03-1011.pdf db/conf/eacl/eacl2003.html#DingliCGW03