TY  - JOUR
AU  - L. L. Maksimova
TI  - Sturctures with implication
JO  - Algebra i logika
PY  - 1973
SP  - 445
EP  - 467
VL  - 12
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1973_12_4_a3/
LA  - ru
ID  - AL_1973_12_4_a3
ER  -