Steven Depuydt Jeroen Vanattenhoven Jan Engelen CityInMyPocket: Digital Walking Guides. 17-26 2006 ELPUB http://urn.kb.se/resolve?urn=urn:nbn:se:elpub-216_elpub2006 conf/elpub/2006 db/conf/elpub/elpub2006.html#DepuydtVE06