ShavalaO. V. “On the Construction of Solutions of Linear Differential Equations According to given sequences”. Ukrains’kyi Matematychnyi Zhurnal 69, no. 10 (October 25, 2017): 1437-1440. Accessed November 21, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1793.