@article{Vakarchuk_2016, title={Jackson-type inequalities with generalized modulus of continuity and exact values of the $n$-widths of the classes of $(ψ,β)$-differentiable functions in $L_2$. II}, volume={68}, url={http://umj.imath.kiev.ua/index.php/umj/article/view/1899}, abstractNote={In the space $L_2$, we determine the exact values of some $n$-widths for the classes of functions such that the generalized
moduli of continuity of their $(\psi, \beta)$ - derivatives or their averages with weight do not exceed the values of the majorants $\Phi$ satisfying certain conditions. Specific examples of realization of the obtained results are also analyzed.}, number={8}, journal={Ukrains’kyi Matematychnyi Zhurnal}, author={Vakarchuk, S. B.}, year={2016}, month={Aug.}, pages={1021-1036} }