[1]
D. T. Nguyen and V. D. Pham, “On the degree of holomorphic mappings from an annulus into an annulus”, Ukr. Mat. Zhurn., vol. 56, no. 8, pp. 1135–1138, Aug. 2004, Accessed: Feb. 16, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3828