MakarovV. L., MaykoN. V., & RyabichevV. L. (2023). Realization of the exact three-point finite-difference schemes for the system of second-order ordinary differential equations. Ukrains’kyi Matematychnyi Zhurnal, 75(1), 72 - 95. https://doi.org/10.37863/umzh.v75i1.7373