Vynnyts’kyi, B. V., and I. B. Sheparovych. 2004. “Interpolation Sequences for the Class of Functions of Finite η-Type Analytic in the Unit Disk”. Ukrains’kyi Matematychnyi Zhurnal 56 (3), 425-30. https://umj.imath.kiev.ua/index.php/umj/article/view/3765.