Fredrik Espinoza Per Persson Anna Sandin Hanna Nyström Elenor Cacciatore Markus Bylund GeoNotes: Social and Navigational Aspects of Location-Based Information Systems. 2-17 2001 conf/huc/2001 Ubicomp http://link.springer.de/link/service/series/0558/bibs/2201/22010002.htm db/conf/huc/ubicomp2001.html#EspinozaPSNCB01