Berezansky YM, Belopolskaya YI, Bogdansky YV, Lyubashenko VV, Mitropolsky YA. Mathematical heritage of Yuri L’vovich Daletskii. MFAT. 1999;5(4):1-8. Accessed December 18, 2025. https://zen.imath.kiev.ua/index.php/mfat/article/view/102