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Discussiones Mathematicae Graph Theory > 2004 > 24 > 2 > 303-318
Discussiones Mathematicae Graph Theory > 1996 > 16 > 1 > 53-79
Discussiones Mathematicae Graph Theory > 2004 > 24 > 2 > 303-318
Discussiones Mathematicae Graph Theory > 1996 > 16 > 1 > 53-79