Discrete Mathematics
Discrete Mathematics > 2009 > 309 > 6 > 1672-1684
Discrete Mathematics > 2009 > 309 > 13 > 4384-4398
Discrete Mathematics > 2009 > 309 > 18 > 5687-5696
Discrete Mathematics > 2009 > 309 > 6 > 1672-1684
Discrete Mathematics > 2009 > 309 > 13 > 4384-4398
Discrete Mathematics > 2009 > 309 > 18 > 5687-5696