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Proceedings of the IEEE > 2013 > 101 > 6 > 1268 - 1270
2010 International Conference on Electronics and Information Engineering > 1 > V1-113 - V1-117
IEEE Transactions on Professional Communication > 2009 > 52 > 2 > 138 - 151
IT Professional > 2009 > 11 > 2 > 60 - 62