F. E. Lomautsau, “Correction method of test solutions of the general wave equation in the first quarter of the plane for minimal smoothness of its right-hand side”, Журнал Белорусского государственного университета. Математика. Информатика, no. 3, pp. 38–52, Feb. 2018, Accessed: Jul. 19, 2026. [Online]. Available: https://journals.bsu.by/index.php/mathematics/article/view/756