1.
Pichugov SA. Smoothness of functions in the metric spaces <i>L</i><sub>ψ</sub&gt;. Ukr. Mat. Zhurn. [Internet]. 2012Sep.25 [cited 2024Nov.21];64(9):1214-32. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/2653