ZAGORODNYUK, S. M. Truncated matrix trigonometric problem of moments: operator approach. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 63, n. 6, p. 786–797, 2011. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2762. Acesso em: 5 dec. 2025.