@article{Pozharska_Zb_IM2025,
author ={Kateryna Pozharska},
title ={Estimates of characteristics of nonlinear approximation of classes of periodic functions},
journal={Transactions of Institute of Mathematics of the NAS of Ukraine}, 
volume={21}, 
number={1}, 
year={2025},
pages={149–168},
DOI={10.3842/trim.v21n1.545}, 
}