Ron Dolin Divyakant Agrawal Amr El Abbadi Laura K. Dillon Pharos: A Scalable Distributed Architecture for Locating Heterogeneous Information Sources. 348-355 CIKM1997/P348.pdf 1997 conf/cikm/97 CIKM http://doi.acm.org/10.1145/266714.266924 db/conf/cikm/cikm97.html#DolinAAD97