TROHIMCHUK, Yu. Yu. Denjoy problems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 60, n. 5, p. 718–720, 2008. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3191. Acesso em: 6 dec. 2025.