Yermachenko, Inara. “On Solvability of the BVPS for the fourth‐order Emden‐Fowler Type Equations”. Mathematical Modelling and Analysis 12, no. 2 (June 30, 2007): 267-276. Accessed November 25, 2024. https://jest.vgtu.lt/index.php/MMA/article/view/7127.