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IEEE Transactions on Learning Technologies > 2016 > 9 > 3 > 258 - 271
IEEE Sensors Journal > 2016 > 16 > 9 > 3163 - 3170
IEEE Transactions on Learning Technologies > 2016 > 9 > 3 > 258 - 271
IEEE Sensors Journal > 2016 > 16 > 9 > 3163 - 3170