TY  - JOUR
AU  - Yu. L. Ershov
TI  - Lattice properties preserved under free products
JO  - Algebra i logika
PY  - 2000
SP  - 66
EP  - 73
VL  - 39
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_2000_39_1_a4/
LA  - ru
ID  - AL_2000_39_1_a4
ER  -