Salimov, R. R., and E. A. Sevost’yanov. “On the Absolute Continuity of Mappings Distorting the moduli of Cylinders”. Ukrains’kyi Matematychnyi Zhurnal 69, no. 6 (June 25, 2017): 860-864. Accessed April 18, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1741.