Discrete Mathematics
Discrete Mathematics > 2007 > 307 > 7-8 > 866-872
Discrete Mathematics > 2007 > 307 > 7-8 > 975-982
Discrete Mathematics > 2007 > 307 > 11-12 > 1347-1355
Discrete Mathematics > 2007 > 307 > 24 > 3161-3176
Discrete Mathematics > 2007 > 307 > 24 > 3213-3219