TY  - JOUR
AU  - E. A. Palyutin
TI  - A supplement to Ju. L. Er\v{s}ov's article: ``The upper semilattice of

JO  - Algebra i logika
PY  - 1975
SP  - 284
EP  - 287
VL  - 14
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1975_14_3_a2/
LA  - ru
ID  - AL_1975_14_3_a2
ER  -