Vasilyev, Alexander V., and Vladimir B. Vasilyev. “Pseudo-Differential Operators and Equations in a Discrete Half-Space”. Mathematical Modelling and Analysis 23, no. 3 (July 4, 2018): 492-506. Accessed November 22, 2024. https://jest.vgtu.lt/index.php/MMA/article/view/368.