1. Doklad ob ekologicheskoi situatsii v Sankt-Peterburge v 2021 g. (Report on the Environmental Situation in St. Petersburg in 2021), Pravitel’stvo Sankt-Peterburga (Government of St. Petersburg), 2022.
2. GOST 17.2.1.03-84.
3. SanPiN 1.2.3685-21.
4. RD 52.04.667-2005.
5. http://www.meteo.nw.ru/articles/index.php?id=1520