Pratsiovytyi, M. V., and H. M. Torbin. “Singular Probability Distributions and Fractal Properties of Sets of Real Numbers Defined by the Asymptotic Frequencies of Their S-Adic Digits”. Ukrains’kyi Matematychnyi Zhurnal 57, no. 9 (September 25, 2005): 1163–1170. Accessed May 4, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3676.