Discrete Applied Mathematics
Discrete Applied Mathematics > 2000 > 99 > 1-3 > 125-148
Discrete Applied Mathematics > 2000 > 100 > 3 > 183-202
Discrete Applied Mathematics > 2000 > 99 > 1-3 > 125-148
Discrete Applied Mathematics > 2000 > 100 > 3 > 183-202