TY  - BOOK
AU  - Godsil Chris
AU  -  Royle Gordon
TI  - Algebraic graph theory
T2  - Graduate texts in mathematics .207
U1  - B44, P1 
PY  - 2001///
CY  - New York  
PB  -  Springer- Verlay     
KW  - Graph Theory-Mathematics
ER  -