BOR, H. A new application of quasimonotone sequences. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 68, n. 7, p. 1004–1008, 2016. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1897. Acesso em: 5 dec. 2025.