[1]
S. B. Vakarchuk, “Widths of classes of functions in the weight space $L_{2,\gamma}(\mathbb{R}), \gamma=\exp(-x^2)$”, Ukr. Mat. Zhurn., vol. 74, no. 5, pp. 610–619, Jun. 2022, doi: 10.37863/umzh.v74i5.7147.