Discrete Mathematics
Discrete Mathematics > 2011 > 311 > 4 > 324-326
Discrete Mathematics > 2011 > 311 > 8-9 > 690-698
Discrete Mathematics > 2011 > 311 > 16 > 1658-1665
Discrete Mathematics > 2011 > 311 > 4 > 324-326
Discrete Mathematics > 2011 > 311 > 8-9 > 690-698
Discrete Mathematics > 2011 > 311 > 16 > 1658-1665