A Dual-Channel Location Estimation System for Providing Location Services Based on the GPS and GSM Networks.

Kenny Ka Ho Kan Stephen Ka Chun Chan Joseph Kee-Yin Ng A Dual-Channel Location Estimation System for Providing Location Services Based on the GPS and GSM Networks. 7-12 2003 conf/aina/2003 AINA http://csdl.computer.org/comp/proceedings/aina/2003/1906/00/19060007abs.htm db/conf/aina/aina2003.html#KanCN03