TY  - JOUR
AU  - A. S. Morozov
TI  - $\Sigma$-preorderings in ${\mathbb{HF}(\mathbb{R})}$
JO  - Algebra i logika
PY  - 2019
SP  - 609
EP  - 626
VL  - 58
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_2019_58_5_a2/
LA  - ru
ID  - AL_2019_58_5_a2
ER  -