Erik Wilde Susanne Boll Keith Cheverst Peter Fröhlich Ross Purves Johannes Schöning Location and the web: (LocWeb 2009). 4737-4740 2009 CHI Extended Abstracts http://doi.acm.org/10.1145/1520340.1520729 conf/chi/2009a db/conf/chi/chi2009a.html#WildeBCFPS09