Rimantas Benetis Christian S. Jensen Gytis Karciauskas Simonas Saltenis Nearest and reverse nearest neighbor queries for moving objects. 229-249 2006 15 VLDB J. 3 http://dx.doi.org/10.1007/s00778-005-0166-4 db/journals/vldb/vldb15.html#BenetisJKS06