TY  - BOOK
AU  - Balakrishnan, R.
AU  - Ranganathan K.
TI  - Textbook of graph theory: with 200 figures 
SN  - 9788181288141
U1  - 511.5  1
PY  - 2008///
CY  - New Delhi
PB  - Springer
KW  - Directed graphs
KW  - Connectivity
KW  - Indepedent sets and matchings
ER  -