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IEEE Access > 2017 > 5 > 19072 - 19083
IEEE Access > 2017 > 5 > 219 - 235
IEEE Access > 2017 > 5 > 1469 - 1481
IEEE Transactions on Vehicular Technology > 2016 > 65 > 11 > 9272 - 9286
IEEE Transactions on Systems, Man, and Cybernetics: Systems > 2017 > 47 > 9 > 2550 - 2561
IEEE Communications Letters > 2015 > 19 > 9 > 1596 - 1599
IEEE Access > 2015 > 3 > 3019 - 3034