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IEEE Journal on Selected Areas in Communications > 2009 > 27 > 7 > 1047 - 1055
IEEE Transactions on Systems, Man, and Cybernetics, Part B (Cybernetics) > 2008 > 38 > 4 > 1084 - 1097
IEEE Journal on Selected Areas in Communications > 2007 > 25 > 9 > 1667 - 1677