Gritsans, Armands, and Felix Sadyrbaev. “On Solvability of Boundary Value Problem for Asymmetric Differential Equation Depending on X ′”. Mathematical Modelling and Analysis 18, no. 2 (April 1, 2013): 176-190. Accessed December 2, 2024. https://mma.vgtu.lt/index.php/MMA/article/view/4106.