Discrete Mathematics
Discrete Mathematics > 2009 > 309 > 1 > 288-292
Discrete Mathematics > 2009 > 309 > 5 > 1033-1040
Discrete Mathematics > 2009 > 309 > 9 > 2922-2924
Discrete Mathematics > 2009 > 309 > 10 > 3452-3457
Discrete Mathematics > 2009 > 309 > 12 > 3779-3785
Discrete Mathematics > 2009 > 309 > 23-24 > 6535-6543