TY  - JOUR
AU  - I. V. Protasov
AU  - A. D. Sidorchuk
TI  - On varieties of topological algebraic systems
JO  - Doklady Akademii Nauk
PY  - 1981
SP  - 1314
EP  - 1318
VL  - 256
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1981_256_6_a7/
LA  - ru
ID  - DAN_1981_256_6_a7
ER  -