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“Sistemi e Servizi LocationBased” (Ottavio Crivaro)
http://www.openmobilealliance.org/location.html
http://www.ericsson.com/mobilityworld/sub/open/technologies/mobile_positioning/index.html
http://www.fcc.gov/911/enhanced/
http://www.eena.org/
http://www.mercat.com/QUEST/gpstutor.htm
http://www.garmin.com/
http://www.3gpp.org/specs/specs.htm
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