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IEEE Transactions on Knowledge and Data Engineering > 2012 > 24 > 8 > 1393 - 1407
IEEE Transactions on Services Computing > 2009 > 2 > 4 > 338 - 351
IT Professional > 2009 > 11 > 5 > 17 - 21
IEEE Internet Computing > 2009 > 13 > 3 > 64 - 71