Discrete Mathematics
Discrete Mathematics > 2003 > 269 > 1-3 > 311-314
Discrete Mathematics > 2003 > 272 > 2-3 > 285-290
Discrete Mathematics > 2004 > 274 > 1-3 > 233-240
Discrete Mathematics > 2003 > 269 > 1-3 > 311-314
Discrete Mathematics > 2003 > 272 > 2-3 > 285-290
Discrete Mathematics > 2004 > 274 > 1-3 > 233-240