ATHMOUNI, N.; DAMAK, M.; JENDOUBI, C. On the ascent-descent spectrum. Methods of Functional Analysis and Topology, [S. l.], v. 27, n. 3, p. 205–216, 2021. DOI: https://doi.org/10.31392/MFAT-npu26_3.2021.02. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/797. Acesso em: 13 dec. 2025.