TimanM. F., and KhasanovYu. “On the Absolute Summability of Fourier Series of Almost-Periodic Besicovitch Functions”. Ukrains’kyi Matematychnyi Zhurnal 61, no. 9 (September 25, 2009): 1267-1276. Accessed November 23, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3098.