Exact and approximate solutions of a problem with a singularity for a convection–diffusion equation
Kazakov A.L. Spevak L.F. Exact and approximate solutions of a problem with a singularity for a convection–diffusion equation // Journal of Applied Mechanics and Technical Physics. 2021. Vol. 62. No. 1. P. 18-26. DOI: 10.1134/S002189442101003X. in Russian