Buldygin, V. V., O. I. Klesov, and J. G. Steinebach. “Properties of a Subclass of Avakumović Functions and Their Generalized Inverses”. Ukrains’kyi Matematychnyi Zhurnal 54, no. 2 (February 25, 2002): 149–169. Accessed April 11, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/4051.