Discrete Applied Mathematics
Discrete Applied Mathematics > 2001 > 108 > 3 > 301-308
Discrete Applied Mathematics > 2001 > 114 > 1-3 > 13-22
Discrete Applied Mathematics > 2001 > 108 > 3 > 301-308
Discrete Applied Mathematics > 2001 > 114 > 1-3 > 13-22