Monadic Datalog and the Expressive Power of Languages for Web Information Extraction
Georg Gottlob and Christoph Koch
Book Title
Proceedings of the Twenty−first ACM SIGACT−SIGMOD−SIGART Symposium on Principles of Database Systems‚ June 3−5‚ Madison‚ Wisconsin‚ USA
Editor
Lucian Popa
Pages
17−28
Publisher
ACM
Year
2002