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Discussiones Mathematicae Graph Theory > 2009 > 29 > 1 > 143-162
Discussiones Mathematicae Graph Theory > 2008 > 28 > 1 > 67-89
Discussiones Mathematicae Graph Theory > 2004 > 24 > 1 > 23-40
Discussiones Mathematicae Graph Theory > 2009 > 29 > 1 > 143-162
Discussiones Mathematicae Graph Theory > 2008 > 28 > 1 > 67-89
Discussiones Mathematicae Graph Theory > 2004 > 24 > 1 > 23-40