R. R. Salimov, “On the boundary behavior of imbeddings of metric spaces into a Euclidean space”, Ukr. Mat. Zhurn., vol. 59, no. 8, pp. 1068–1074, Aug. 2007, Accessed: Feb. 16, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3370