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Discussiones Mathematicae Graph Theory > 2005 > 25 > 1-2 > 45-50
Discussiones Mathematicae Graph Theory > 1999 > 19 > 2 > 135-142
Discussiones Mathematicae Graph Theory > 2005 > 25 > 1-2 > 45-50
Discussiones Mathematicae Graph Theory > 1999 > 19 > 2 > 135-142