TY  - JOUR
AU  - A. S. Vaidzelevich
TI  - On spectra of upper Sergeev frequencies of linear differential equations
JO  - Journal of the Belarusian State University. Mathematics and Informatics
PY  - 2019
SP  - 28
EP  - 32
VL  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/BGUMI_2019_1_a3/
LA  - ru
ID  - BGUMI_2019_1_a3
ER  -