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Discrete Mathematics > 2008 > 308 > 9 > 1571-1582
Discussiones Mathematicae Graph Theory > 2004 > 24 > 1 > 47-54
Electronic Notes in Discrete Mathematics > 2002 > 11 > Complete > 358-364
Discrete Mathematics > 2008 > 308 > 9 > 1571-1582
Discussiones Mathematicae Graph Theory > 2004 > 24 > 1 > 47-54
Electronic Notes in Discrete Mathematics > 2002 > 11 > Complete > 358-364