TY  - JOUR
AU  - A. A. Temirov
TI  - Concept of two-level

JO  - News of the Kabardin-Balkar scientific center of RAS
PY  - 2015
SP  - 183
EP  - 191
IS  - 6-2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IZKAB_2015_6-2_a28/
LA  - ru
ID  - IZKAB_2015_6-2_a28
ER  -