TY  - JOUR
AU  - I. N. Ponomarenko
TI  - The isomorphism problem for classes of graphs
JO  - Doklady Akademii Nauk
PY  - 1989
SP  - 552
EP  - 556
VL  - 304
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1989_304_3_a8/
LA  - ru
ID  - DAN_1989_304_3_a8
ER  -