Khats’, R.V. (2011) “Regularity of growth of fourier coefficients of entire functions of improved regular growth”, Ukrains’kyi Matematychnyi Zhurnal, 63(12), pp. 1717–1721. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/2837 (Accessed: 5 December 2025).