@article{Pozharska_Romanyuk_Yanchenko_2025_CarpPubl, 
author={Pozharska, K. and Romanyuk, A.S. and Yanchenko, S.Ya.}, 
title={Estimates of the characteristics of nonlinear approximation of classes of periodic functions of many variables}, 
journal={Carpathian Mathematical Publications}, 
number={2}, 
year={2025}, 
pages={447–460}, 
volume={17}, 
DOI={10.15330/cmp.17.2.447-460}, 
}