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Discussiones Mathematicae Graph Theory > 2006 > 26 > 1 > 103-112
Discussiones Mathematicae Graph Theory > 2005 > 25 > 1-2 > 35-44
Discussiones Mathematicae Graph Theory > 2006 > 26 > 1 > 103-112
Discussiones Mathematicae Graph Theory > 2005 > 25 > 1-2 > 35-44