Stepanets, O. I., Wang, K. and Zhang, X. (1999) “Approximation of locally integrable functions on the real line”, Ukrains’kyi Matematychnyi Zhurnal, 51(11), pp. 1549–1561. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4756 (Accessed: 18May2024).