1. Naming the coronavirus disease (COVID-19) and the virus that causes it. (In Russ.) https://www.who.int/ru/emergencies/diseases/novel-coronavirus-2019/technical-guidance/naming-the-coronavirus-disease-(covid-2019)-and-the-virus-that-causes-it.
2. Avdeev SN, Adamyan LV, Baranov AA, et al. Prevention, diagnosis and treatment of new coronavirus infection (2019-NCOV). Temporary guidelines. Electronic resource. The Ministry of Health of the Russian and The Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing. Moscow, 2020. Volume Version 1. (In Russ.) https://www.garant.ru/products/ipo/prime/doc/73380395.
3. Avdeev SN, Adamyan LV, Alekseeva EI, et al. Prevention, diagnosis and treatment of new coronavirus infection (COVID-19). Moscow, 2021. Volume Version 11 (7.05.2021). (In Russ.) https://base.garant.ru/400738625.