Zamrii, I.V., V.V. Shkapa, and H.M. Vlasyk. “Fundamentals of Metric Theory of Real Numbers in Their $\overline{Q_3}$-Representation”. Matematychni Studii 56, no. 1 (October 23, 2021): 3-19. Accessed April 26, 2024. http://www.matstud.org.ua/ojs/index.php/matstud/article/view/102.