Discrete Applied Mathematics
Discrete Applied Mathematics > 2000 > 99 > 1-3 > 229-244
Discrete Applied Mathematics > 2000 > 102 > 3 > 223-243
Discrete Applied Mathematics > 2000 > 99 > 1-3 > 229-244
Discrete Applied Mathematics > 2000 > 102 > 3 > 223-243