BASKAKOV, A. G. On the decomposition of a perturbed operator of weighted shift. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 50, n. 2, p. 155–161, 1998. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4950. Acesso em: 5 dec. 2025.