Discrete Applied Mathematics
Discrete Applied Mathematics > 2009 > 157 > 9 > 1993-2009
Discrete Applied Mathematics > 2009 > 157 > 9 > 2070-2077
Discrete Applied Mathematics > 2009 > 157 > 9 > 2198-2206
Discrete Applied Mathematics > 2009 > 157 > 9 > 2057-2069