POLYAKOV, D. On the Bari basis property for even-order differential operators with involution. Tamkang Journal of Mathematics, [S. l.], v. 54, n. 4, p. 339–351, 2022. DOI: 10.5556/j.tkjm.54.2023.4899. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4899. Acesso em: 18 may. 2024.