E. A. Sevost'yanov, “On Equicontinuous Families of Mappings Without Values in Variable Sets”, Ukr. Mat. Zhurn., vol. 66, no. 3, pp. 361–370, Mar. 2014, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2138