Hannu Kukka Timo Ojala Juha Tiensyrjä Teemu Mikkonen panOULU Luotsi: a location based information mash-up with XML aggregator and WiFi positioning. 80-83 2008 MUM http://doi.acm.org/10.1145/1543137.1543152 conf/mum/2008 db/conf/mum/mum2008.html#KukkaOTM08