Ken C. K. Lee Hong Va Leong Antonio Si Approximating Object Location for Moving Object Database. 402-407 2003 conf/icdcsw/2003 ICDCS Workshops http://csdl.computer.org/comp/proceedings/icdcsw/2003/1921/00/19210402abs.htm db/conf/icdcsw/icdcsw2003.html#LeeLS03