Discrete Applied Mathematics
Discrete Applied Mathematics > 2004 > 143 > 1-3 > 272-284
Discrete Applied Mathematics > 2005 > 146 > 3 > 233-243
Discrete Applied Mathematics > 2004 > 143 > 1-3 > 272-284
Discrete Applied Mathematics > 2005 > 146 > 3 > 233-243