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IEEE Communications Letters > 2010 > 14 > 9 > 791 - 793
IEEE Transactions on Mobile Computing > 2010 > 9 > 6 > 824 - 837
IEEE Communications Letters > 2010 > 14 > 9 > 791 - 793
IEEE Transactions on Mobile Computing > 2010 > 9 > 6 > 824 - 837