Özarslan, Hikmet Seyhan. “On Absolute Summability of Infinite Series and Fourier Series”. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica 22 (August 30, 2023): 127–134. Accessed April 3, 2025. https://studmath.uken.krakow.pl/article/view/10471.