Dmytryshyn, R. I. “Associated Branched Continued Fractions With Two Independent Variables”. Ukrains’kyi Matematychnyi Zhurnal 66, no. 9 (September 25, 2014): 1175–1184. Accessed April 14, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/2208.