MOHAPATRA, R. N.; SARIGOL, M. A. On matrix operators on the series space $|\bar{N}_p^θ|_k$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 69, n. 11, p. 1524–1533, 2017. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1800. Acesso em: 5 dec. 2025.