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Huan-Chao Keh, Kuei-Ping Shih, Chih-Yung Chang, Hung-Chang Chen, Chien-Min Chou. GUARD: a GUide, Alarm, Recovery and Detection System on a Wireless Sensor Network for the Blind. J. Mobile Multimedia, 2(4):359-370, 2006. [doi]
Abstract is missing.