Sarana Nutanong Rui Zhang Egemen Tanin Lars Kulik The V*-Diagram: a query-dependent approach to moving KNN queries. 1095-1106 2008 1 PVLDB 1 http://www.vldb.org/pvldb/1/1453973.pdf db/journals/pvldb/pvldb1.html#NutanongZTK08