T. O. Banakh and M. I. Vovk, “Separately $Fσ$-measurable functions are close to functions of the first baire class”, Ukr. Mat. Zhurn., vol. 56, no. 4, pp. 573–576, Apr. 2004, Accessed: Feb. 16, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3778