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IEEE Transactions on Mobile Computing > 2009 > 8 > 8 > 1077 - 1086
IEEE Communications Letters > 2007 > 11 > 12 > 937 - 939
IEEE Transactions on Mobile Computing > 2009 > 8 > 8 > 1077 - 1086
IEEE Communications Letters > 2007 > 11 > 12 > 937 - 939