TY  - JOUR
AU  - R. R. Mukhin
TI  - Development of the conceptual provisions of the qualitative theory
JO  - Čebyševskij sbornik
PY  - 2022
SP  - 269
EP  - 290
VL  - 23
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CHEB_2022_23_5_a21/
LA  - ru
ID  - CHEB_2022_23_5_a21
ER  -