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Graphs and Combinatorics > 2012 > 28 > 3 > 315-332
Discussiones Mathematicae Graph Theory > 2011 > 31 > 1 > 25-35
Graphs and Combinatorics > 2012 > 28 > 3 > 315-332
Discussiones Mathematicae Graph Theory > 2011 > 31 > 1 > 25-35