Andrievsky, V.V. (1987) “Constructive description of classes of harmonic functions with peculiarities on the quasi-conformal arc”, Ukrains’kyi Matematychnyi Zhurnal, 40(1), pp. 3–7. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/9045 (Accessed: 5 December 2025).