TSEKANOVSKII, E.; BELYI, S. Sectorial classes of inverse Stieltjes functions and L-systems. Methods of Functional Analysis and Topology, [S. l.], v. 18, n. 3, p. 201–213, 2012. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/516. Acesso em: 18 dec. 2025.