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IEEE Sensors Journal > 2015 > 15 > 6 > 3436 - 3445
IEEE Communications Surveys & Tutorials > 2013 > 15 > 3 > 1210 - 1222
IEEE Sensors Journal > 2011 > 11 > 3 > 745 - 754
2010 Second WRI Global Congress on Intelligent Systems > 1 > 397 - 399