Temirgaliyev Н. “Transformation and Absolute Convergence of Trigonometric Fourier Series”. Bulletin of L.N. Gumilyov Eurasian National University. Mathematics, computer science, mechanics series 127, no. 2 (June 30, 2019): 8–26. Accessed November 23, 2024. https://bulmathmc.enu.kz/index.php/main/article/view/49.