Dunduchenko, L. E. “On a Formula of Reversion for a Subclass of Typically Real Functions ”. Ukrains’kyi Matematychnyi Zhurnal 18, no. 3 (April 27, 1966): 107–112. Accessed April 14, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/8743.