Savchuk V, Savchuk M. Generalization of the Schwarz–Pick inequality and its application to the extreme problems of approximation of holomorphic functions. Ukr. Mat. Zhurn. [Internet]. 2025 Oct. 31 [cited 2025 Dec. 5];77(1):47-56. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/8692