TY  - BOOK
AU  - Hoffmann Christoph M
TI  - Group-theroetic algortihms and graph isomorphism
T2  - Lecture Notes in computer Science; 136
U1  - B44, M2 
PY  - 1982///
CY  - Berlin
PB  - Springer Verlag        
KW  - Graph theory
ER  -