Ostrovska, O., and R. Y. Yakymiv. “On Isometries Satisfying Deformed Commutation Relations”. Methods of Functional Analysis and Topology 25, no. 2 (June 25, 2019): 152–160. Accessed February 4, 2026. https://zen.imath.kiev.ua/index.php/mfat/article/view/719.