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Discussiones Mathematicae Graph Theory > 2015 > 35 > 1 > 133-140
Discussiones Mathematicae Graph Theory > 2013 > 33 > 2 > 437-456
Discussiones Mathematicae Graph Theory > 2015 > 35 > 1 > 133-140
Discussiones Mathematicae Graph Theory > 2013 > 33 > 2 > 437-456