TY  - JOUR
AU  - A. N. Degtev
TI  - Some results on upper semilattices and $m$-degrees
JO  - Algebra i logika
PY  - 1979
SP  - 664
EP  - 679
VL  - 18
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1979_18_6_a2/
LA  - ru
ID  - AL_1979_18_6_a2
ER  -