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IEEE Internet Computing > 2014 > 18 > 1 > 56 - 64
IEEE Transactions on Engineering Management > 2009 > 56 > 2 > 329 - 340
IEEE Internet Computing > 2014 > 18 > 1 > 56 - 64
IEEE Transactions on Engineering Management > 2009 > 56 > 2 > 329 - 340