Discrete Mathematics
Discrete Mathematics > 2009 > 309 > 5 > 1041-1042
Discrete Mathematics > 2009 > 309 > 11 > 3714-3725
Discrete Mathematics > 2009 > 309 > 14 > 4682-4689
Discrete Mathematics > 2009 > 309 > 5 > 1041-1042
Discrete Mathematics > 2009 > 309 > 11 > 3714-3725
Discrete Mathematics > 2009 > 309 > 14 > 4682-4689