TY  - JOUR
AU  - A. I. Mal'tsev
TI  - On classes of models which possess the operation of generation
JO  - Doklady Akademii Nauk
PY  - 1957
SP  - 738
EP  - 741
VL  - 116
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1957_116_5_a5/
LA  - ru
ID  - DAN_1957_116_5_a5
ER  -