@article{Akishev_2014, title={Trigonometric Widths of the Nikol’skii–Besov Classes in the Lebesgue Space with Mixed Norm}, volume={66}, url={https://umj.imath.kiev.ua/index.php/umj/article/view/2173}, abstractNote={We establish exact-order estimates for the trigonometric widths of the Nikol’skii–Besov classes of periodic functions of many variables in the Lebesgue space with mixed norm.}, number={6}, journal={Ukrains’kyi Matematychnyi Zhurnal}, author={Akishev, G.}, year={2014}, month={Jun.}, pages={723–732} }