Shavala, O. 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 December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/1793.