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Journal of Combinatorial Optimization > 2013 > 25 > 1 > 78-90
Applied Mathematics Letters > 2009 > 22 > 7 > 1136-1140
Journal of Combinatorial Optimization > 2013 > 25 > 1 > 78-90
Applied Mathematics Letters > 2009 > 22 > 7 > 1136-1140