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Discussiones Mathematicae Graph Theory > 2005 > 25 > 1-2 > 57-65
Discussiones Mathematicae Graph Theory > 2004 > 24 > 1 > 109-114
Discussiones Mathematicae Graph Theory > 2005 > 25 > 1-2 > 57-65
Discussiones Mathematicae Graph Theory > 2004 > 24 > 1 > 109-114