Maslyuchenko, V. K., and O. V. Maslyuchenko. “Construction of a Separately Continuous Function With Given Oscillation”.
Ukrains’kyi Matematychnyi Zhurnal, vol. 50, no. 7, July 1998, pp. 948–959,
https://umj.imath.kiev.ua/index.php/umj/article/view/4875.