TY  - JOUR
AU  - T. A. Martynova
TI  - The largest groupoid of varieties of semigroups with zero
JO  - Algebra i logika
PY  - 1982
SP  - 251
EP  - 268
VL  - 21
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1982_21_3_a0/
LA  - ru
ID  - AL_1982_21_3_a0
ER  -