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Discussiones Mathematicae Graph Theory > 2010 > 30 > 2 > 277-288
Discussiones Mathematicae Graph Theory > 2007 > 27 > 3 > 527-540
Discussiones Mathematicae Graph Theory > 2002 > 22 > 2 > 229-231
Discussiones Mathematicae Graph Theory > 2010 > 30 > 2 > 277-288
Discussiones Mathematicae Graph Theory > 2007 > 27 > 3 > 527-540
Discussiones Mathematicae Graph Theory > 2002 > 22 > 2 > 229-231