Discrete Applied Mathematics
Discrete Applied Mathematics > 1997 > 77 > 2 > 185-200
Discrete Applied Mathematics > 1997 > 78 > 1-3 > 117-132
Discrete Applied Mathematics > 1997 > 77 > 2 > 185-200
Discrete Applied Mathematics > 1997 > 78 > 1-3 > 117-132