Rafayelyan, S. G., and A. M. Jerbashian. “On Unitary Operators in Weighted Spaces $A^2_\omega(\mathbb{C})$ of Entire Functions”. Methods of Functional Analysis and Topology 14, no. 4 (December 25, 2008): 380–385. Accessed December 16, 2025. https://zen.imath.kiev.ua/index.php/mfat/article/view/401.