KOVALYOV, I.; LEBEDEVA, E.; STAKHOVA, O. $\alpha-$regular indefinite Stieltjes moment problem and Darboux transformation. Methods of Functional Analysis and Topology, [S. l.], v. 27, n. 4, p. 353–369, 2021. DOI: https://doi.org/10.31392/MFAT-npu26_4.2021.09. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/811. Acesso em: 15 dec. 2025.