U. Goginava, “On the embedding of Waterman class in the class Hpω”, Ukr. Mat. Zhurn., vol. 57, no. 11, pp. 1557–1562, Nov. 2005, Accessed: Apr. 09, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3707