V. I. Buslaev, “On Hankel determinants of functions given by their expansions in $P$-fractions”, Ukr. Mat. Zhurn., vol. 62, no. 3, pp. 315–326, Mar. 2010, Accessed: Apr. 23, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2870