Mirzakulova, A.E., N. Atakhan, N. Asset, and A. Rysbek. 2018. “Asymptotic Convergence of the Solution for Singularly Perturbed Boundary Value Problem With Boundary Jumps”. Bulletin of the Karaganda University. Mathematics Series 92 (4):64-71. https://doi.org/10.31489/2018m4/64-71.