For citations:

Nikiforov S.A. The defensive battle on the southwestern approaches to the Kursk region at the end of september 1941: Little-known pages of the defense of Sumy. Proceedings of Southwest State University. Series: History and Law. 2025;15(3):257-269. (In Russ.) https://doi.org/10.21869/2223-1501-2025-15-3-257-269