Vakarchuk SB. Widths of classes of functions in the weight space $L_{2,\gamma}(\mathbb{R}), \gamma=\exp(-x^2)$. Ukr. Mat. Zhurn. [Internet]. 2022 Jun. 17 [cited 2025 Dec. 8];74(5):610-9. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/7147