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Discrete Mathematics > 2012 > 312 > 6 > 1084-1093
Graphs and Combinatorics > 2011 > 27 > 5 > 621-646
Discrete Mathematics > 2010 > 310 > 3 > 537-556
Discrete Mathematics > 2012 > 312 > 6 > 1084-1093
Graphs and Combinatorics > 2011 > 27 > 5 > 621-646
Discrete Mathematics > 2010 > 310 > 3 > 537-556