1.
Karlova OO, Mykhailyuk VV. Functions of the first Baire class with values in metrizable spaces. Ukr. Mat. Zhurn. [Internet]. 2006Apr.25 [cited 2024Apr.18];58(4):568–572. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3475