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 May 6, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3565.