%0 Book %E Schiller, Jochen, 1967- %E Voisard, Agnès %I Elsevier, Morgan Kaufmann Publishers %D 2004 %C Amsterdam ; Boston ; Heidelberg ; London ; New York ; Oxford ; Paris ; San Diego ; San Francisco ; Singapore ; Sydney ; Tokyo %G English %B Morgan Kaufmann series in data management systems %@ 1558609296 %T Location-based services