P. M. Tamrazov, “Differential Contour-Solid problem of Analytic Functions”, Ukr. Mat. Zhurn., vol. 48, no. 6, pp. 834–842, Jun. 1996, Accessed: Apr. 13, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5283