Domenico Beneventano Sonia Bergamaschi Francesco Guerra Maurizio Vincini Querying a Super-Peer in a Schema-Based Super-Peer Network. 13-25 2005 conf/dbisp2p/2006 DBISP2P http://dx.doi.org/10.1007/978-3-540-71661-7_2 db/conf/dbisp2p/dbisp2p2006.html#BeneventanoBGV05