HerasymchukV. H., MaslyuchenkoV. K., and MaslyuchenkoO. V. “Separately Continuous Functions With Respect to a Variable Frame”. Ukrains’kyi Matematychnyi Zhurnal 56, no. 9 (September 25, 2004): 1281-1286. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3841.