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IEEE Communications Surveys & Tutorials > 2009 > 11 > 4 > 78 - 108
IEEE Transactions on Mobile Computing > 2008 > 7 > 11 > 1311 - 1324
IEEE Transactions on Mobile Computing > 2008 > 7 > 12 > 1397 - 1414
IEEE Journal on Selected Areas in Communications > 2007 > 25 > 4 > 722 - 737