Discrete Mathematics
Discrete Mathematics > 2009 > 309 > 8 > 2445-2451
Discrete Mathematics > 2009 > 309 > 13 > 4355-4361
Discrete Mathematics > 2009 > 309 > 17 > 5461-5473
Discrete Mathematics > 2009 > 309 > 8 > 2445-2451
Discrete Mathematics > 2009 > 309 > 13 > 4355-4361
Discrete Mathematics > 2009 > 309 > 17 > 5461-5473