TunçE. “On the Convergence of Solutions of Certain Inhomogeneous Fourth-Order Differential Equations”. Ukrains’kyi Matematychnyi Zhurnal 62, no. 5 (May 25, 2010): 714–721. Accessed November 22, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2903.