Mozel’, V. A. “Banach Algebra Generated by a Finite Number of Bergman Polykernel Operators, Continuous Coefficients, and a Finite Group of Shifts”. Ukrains’kyi Matematychnyi Zhurnal 62, no. 9 (September 25, 2010): 1247–1255. Accessed March 29, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2951.