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Journal of Systems Engineering and Electronics > 2008 > 19 > 4 > 635-642
Wuhan University Journal of Natural Sciences > 2007 > 12 > 3 > 481-484
Journal of Systems Engineering and Electronics > 2008 > 19 > 4 > 635-642
Wuhan University Journal of Natural Sciences > 2007 > 12 > 3 > 481-484