%0 Conference Paper %1 DBLP:conf/esws/EiterIST06 %A Eiter, Thomas %A Ianni, Giovambattista %A Schindlauer, Roman %A Tompits, Hans %B ESWC %D 2006 %K web proceedings 2006 and reason eswc rules european conference semantic %P 273-287 %T Effective Integration of Declarative Rules with External Evaluations for Semantic-Web Reasoning.