V. V. . Andrievsky, “Constructive description of classes of harmonic functions with peculiarities on the quasi-conformal arc”, Ukr. Mat. Zhurn., vol. 40, no. 1, pp. 3–7, Dec. 1987, Accessed: Feb. 17, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/9045