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IEEE Intelligent Systems > 2009 > 24 > 4 > 14 - 20
IEEE Technology and Society Magazine > 1982 > 1 > 4 > 9 - 12
IEEE Intelligent Systems > 2009 > 24 > 4 > 14 - 20
IEEE Technology and Society Magazine > 1982 > 1 > 4 > 9 - 12