TY  - JOUR
AU  - А. М. Slobodskoi
AU  - E. I. Fridman
TI  - Undecidable universal theories of lattices of subgroups of abelian
JO  - Algebra i logika
PY  - 1976
SP  - 227
EP  - 234
VL  - 15
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1976_15_2_a5/
LA  - ru
ID  - AL_1976_15_2_a5
ER  -