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IEEE Communications Surveys & Tutorials > 2014 > 16 > 4 > 1996 - 2018
IEEE Sensors Journal > 2011 > 11 > 3 > 641 - 648
IEEE Communications Surveys & Tutorials > 2014 > 16 > 4 > 1996 - 2018
IEEE Sensors Journal > 2011 > 11 > 3 > 641 - 648