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Discussiones Mathematicae Graph Theory > 2014 > 34 > 3 > 613-627
Discrete Applied Mathematics > 2006 > 154 > 1 > 47-58
Discussiones Mathematicae Graph Theory > 2014 > 34 > 3 > 613-627
Discrete Applied Mathematics > 2006 > 154 > 1 > 47-58