Discrete Applied Mathematics
Discrete Applied Mathematics > 2011 > 159 > 2-3 > 157-163
Discrete Applied Mathematics > 2011 > 159 > 8 > 760-768
Discrete Applied Mathematics > 2011 > 159 > 2-3 > 157-163
Discrete Applied Mathematics > 2011 > 159 > 8 > 760-768