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Group location tracking based on representative identity and virtual VLR for transportation systems HAN, IL; Cho, Dong-Ho, IEEE COMMUNICATIONS LETTERS, v.5, no.8, pp.349 - 351, 2001-08 |
Hierarchical group location tracking for transportation systems in wireless personal communication networks Il Han; Cho, Dong-Ho, WIRELESS PERSONAL COMMUNICATIONS, v.26, pp.17 - 31, 2003-08 |
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