Sheremeta, Z. M., and M. M. Sheremeta. “Properties of Entire Solutions of Differential Equations”.
Ukrains’kyi Matematychnyi Zhurnal 58, no. 12 (December 25, 2006): 1693–1703. Accessed April 7, 2025.
https://umj.imath.kiev.ua/index.php/umj/article/view/3565.