- Roger Zimmermann, Wei-Shinn Ku, Wei-Cheng Chu:
Efficient query routing in distributed spatial databases. GIS 2004: 176-183 - Dieter Pfoser, Isabel F. Cruz, Marc Ronthaler:
12th ACM International Workshop on Geographic Information Systems, ACM-GIS 2004, November 12-13, 2004, Washington, DC, USA, Proceedings. ACM 2004, ISBN 1-58113-979-9 [contents]