Discrete Applied Mathematics
Discrete Applied Mathematics > 1997 > 78 > 1-3 > 117-132
Discrete Applied Mathematics > 1997 > 79 > 1-3 > 137-154
Discrete Applied Mathematics > 1997 > 78 > 1-3 > 117-132
Discrete Applied Mathematics > 1997 > 79 > 1-3 > 137-154