TY  - BOOK
AU  - Bollobás,Béla
TI  - Graph theory: an introductory course 
T2  - Graduate texts in mathematics ; 63
SN  - 0387903992
U1  - 510.44 
PY  - 1979///
CY  - New York
PB  - Springer
KW  - TEORIA DE GRAFOS
ER  -