V. V. Myronyuk, “Approximation of Functions of Many Variables from the Classes $B_{p,θ}^{Ω} (ℝ^d)$ By Entire Functions of Exponential Type”, Ukr. Mat. Zhurn., vol. 66, no. 2, pp. 244–258, Feb. 2014, Accessed: Apr. 09, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2127