“Ecological-Hydrogeochemical Assessment of the Aqueous Upper Pliocene Terrigenous Horizon Condition in the Area of Village Medovka Ramonsky District of Voronezh Region”. Proceedings of Voronezh State University. Series: Geology, no. 2, Mar. 2019, pp. 107-1, https://doi.org/10.17308/geology.2019.2/1798.