LasuriyaR. A. (2002) “(ϕ, α)-Strong Summability of Fourier–Laplace Series for Functions Continuous on a Sphere”, Ukrains’kyi Matematychnyi Zhurnal, 54(5), pp. 656-665. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4104 (Accessed: 24November2024).