TY  - JOUR
AU  - A. G. Pinus
TI  - Intervals and chains in epimorphism skeletons of
JO  - Algebra i logika
PY  - 1990
SP  - 207
EP  - 219
VL  - 29
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1990_29_2_a6/
LA  - ru
ID  - AL_1990_29_2_a6
ER  -