Discrete Mathematics
Discrete Mathematics > 2005 > 290 > 1 > 105-108
Discrete Mathematics > 2005 > 299 > 1-3 > 49-55
Discrete Mathematics > 2005 > 301 > 2-3 > 243-246
Discrete Mathematics > 2005 > 290 > 1 > 105-108
Discrete Mathematics > 2005 > 299 > 1-3 > 49-55
Discrete Mathematics > 2005 > 301 > 2-3 > 243-246