Discrete Applied Mathematics
Discrete Applied Mathematics > 2000 > 98 > 3 > 219-225
Discrete Applied Mathematics > 2000 > 100 > 1-2 > 49-65
Discrete Applied Mathematics > 2000 > 103 > 1-3 > 41-54
Discrete Applied Mathematics > 2000 > 105 > 1-3 > 39-50