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IEEE Access > 2017 > 5 > 6345 - 6360
IEEE Access > 2017 > 5 > 9682 - 9690
IEEE Transactions on Intelligent Transportation Systems > 2017 > 18 > 1 > 59 - 68
IEEE Internet of Things Journal > 2016 > 3 > 6 > 997 - 1005
IEEE Internet of Things Journal > 2016 > 3 > 6 > 971 - 978