KOTOVA, O. V.; TRIGUB, R. M. 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, [S. l.], v. 67, n. 8, p. 1082–1096, 2015. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2047. Acesso em: 5 dec. 2025.