TY  - JOUR
AU  - B. I. Zil'ber
TI  - Isomorphism and elementary equivalence of commutative semigroups
JO  - Algebra i logika
PY  - 1970
SP  - 667
EP  - 671
VL  - 9
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1970_9_6_a5/
LA  - ru
ID  - AL_1970_9_6_a5
ER  -