TY  - JOUR
TI  - Tyshkevich Regina Iosifovna
JO  - Journal of the Belarusian State University. Mathematics and Informatics
PY  - 2020
SP  - 84
EP  - 85
VL  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/BGUMI_2020_1_a11/
LA  - ru
ID  - BGUMI_2020_1_a11
ER  -