KARLOVA, O. O.; MYKHAILYUK, V. V. Cross Topology and Lebesgue Triples. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 5, p. 722–727, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2456. Acesso em: 5 dec. 2025.