[1]
Aldibekov T.М. and Aldazharova, M.M. 2020. On a diagonal system of the first-order partial differential equations from two independent variables. Journal of Mathematics, Mechanics and Computer Science. 105, 1 (Apr. 2020), 3–9. DOI:https://doi.org/10.26577/JMMCS.2020.v105.i1.01.