“Estimates of the orthogonal widths of the classes $B^{\Omega}_{\infty,\theta}$ of periodic functions of many variables with given majorant of the mixed moduli of continuity” (2015) Transactions of Institute of Mathematics, the NAS of Ukraine, 12(4), pp. 205–215. Available at: https://trim.imath.kiev.ua/index.php/trim/article/view/294 (Accessed: 27 August 2026).