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Journal of Combinatorial Optimization > 2016 > 31 > 4 > 1586-1608
Journal of Combinatorial Optimization > 2016 > 31 > 1 > 44-51
Discrete Applied Mathematics > 2013 > 161 > 6 > 829-837
Discrete Mathematics > 2004 > 281 > 1-3 > 137-148
Discrete Mathematics > 2003 > 260 > 1-3 > 197-203