TY  - GEN
AU  - Chartrand,Gary and  and
AU  - Lesniak, Linda
AU  - Zhang, Ping
ED  - 
ED  - 
ED  - 
TI  - Graphs and Digraphs
U1  - 511.5 
PY  - 2011///
CY  - London
PB  - CRC Press
KW  - 
KW  - Mathematics
ER  -