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Discussiones Mathematicae Graph Theory > 2015 > 35 > 4 > 689-701
Annales UMCS, Mathematica > 2014 > 68 > 2
Discussiones Mathematicae Graph Theory > 2009 > 29 > 2 > 209-218
Discussiones Mathematicae Graph Theory > 2015 > 35 > 4 > 689-701
Annales UMCS, Mathematica > 2014 > 68 > 2
Discussiones Mathematicae Graph Theory > 2009 > 29 > 2 > 209-218