Shmykov, V. I. (2020) “Contribution S. V. Chefranov and G. G. Schwittau to the Training of Geographers in Voronezh”, Proceedings of Voronezh State University. Series: Geography. Geoecology, 0(1), pp. 128-133. doi: 10.17308/geo.2020.1/2671.