YERKEX, A.T.; BEKZHAN, T.N. On outer elements of the noncommutative Hp spaces. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 77, n. 1, p. 56–59, 2015. Disponível em: https://mts.buketov.edu.kz/mathematics-vestnik/article/view/11. Acesso em: 1 apr. 2026.