Derkach, V. A., and I. Kovalyov. “Full Indefinite Stieltjes Moment Problem and Padé Approximants”. Methods of Functional Analysis and Topology 26, no. 1 (March 25, 2020): 1–26. Accessed December 15, 2025. https://zen.imath.kiev.ua/index.php/mfat/article/view/741.