“Problems of Organising Specially Protected Natural Areas in Cities, Using the Valley of the Izhora River and Its Tributaries As an Example”. 2023. Proceedings of Voronezh State University. Series: Geography. Geoecology, no. 3 (November): 112-21. https://doi.org/10.17308/geo/1609-0683/2023/3/112-121.