@article{Romanyuk_Romanyuk_2016, title={Estimates for the best bilinear approximations of the classes $B^r_{p,\theta}$ and singular numbers of integral operators}, volume={68}, url={https://umj.imath.kiev.ua/index.php/umj/article/view/1917}, abstractNote={We obtain the exact-order estimates for the best bilinear approximations of the Nikol‘ski–Besov classes $B^r_{p,\theta}$ of periodic functions of several variables. We also find the orders for singular numbers of the integral operators with kernels from the classes $B^r_{p,\theta}$.}, number={9}, journal={Ukrains’kyi Matematychnyi Zhurnal}, author={Romanyuk, A. S. and Romanyuk, V. S.}, year={2016}, month={Sep.}, pages={1240-1250} }