Discrete Applied Mathematics
Discrete Applied Mathematics > 2001 > 115 > 1-3 > 187-198
Discrete Applied Mathematics > 2001 > 115 > 1-3 > 89-97
Discrete Applied Mathematics > 2001 > 115 > 1-3 > 187-198
Discrete Applied Mathematics > 2001 > 115 > 1-3 > 89-97