TY  - JOUR
AU  - Yu. I. Merzlyakov
TI  - Automorphisms of two-dimensional congruence groups
JO  - Algebra i logika
PY  - 1973
SP  - 468
EP  - 477
VL  - 12
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1973_12_4_a4/
LA  - ru
ID  - AL_1973_12_4_a4
ER  -