Kotova, O. V., & Trigub, R. M. (2015). A New Sufficient Condition for Belonging to the Algebra of Absolutely Convergent Fourier Integrals and Its Application to the Problems of Summability of Double Fourier Series. Ukrains’kyi Matematychnyi Zhurnal, 67(8), 1082-1096. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/2047