KRUTOI , K. A. On stability of deformations of Cuntz – Toeplitz algebras. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 73, n. 5, p. 674–678, 2021. DOI: 10.37863/umzh.v73i5.6590. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6590. Acesso em: 5 dec. 2025.