TY  - BOOK
AU  - Jensen Tommy R
AU  - Toft Bjarne
TI  - Graph coloring problems
SN  - 0-471-02865-7
U1  - 511.5 
PY  - 1995///
CY  - NY
PB  - John Wiley
KW  - Graph theory
KW  - Map coloring problem
ER  -