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Graphs and Combinatorics > 2017 > 33 > 4 > 1037-1053
Discrete Mathematics > 2009 > 309 > 22 > 6337-6343
Discrete Mathematics > 2001 > 234 > 1-3 > 139-142
Graphs and Combinatorics > 2017 > 33 > 4 > 1037-1053
Discrete Mathematics > 2009 > 309 > 22 > 6337-6343
Discrete Mathematics > 2001 > 234 > 1-3 > 139-142