HRYNIV, R.O. Analyticity and uniform stability in the inverse spectral problem for impedance Sturm-Liouville operators. Carpathian Mathematical Publications, [S. l.], v. 2, n. 1, p. 35–58, 2010. Disponível em: https://scijournals.pnu.edu.ua/index.php/cmp/article/view/3991. Acesso em: 30 apr. 2024.