https://www.reuters.com/article/us-health-coronavirus-russia-volunteers-idUSKBN28E15T
https://www.ng.ru/politics/2020-12-02/1_8029_foreigners1.html
https://www.kommersant.ru/doc/4594625
https://ru.krymr.com/a/covid-19-rossia-feikovaya-statistika/30978640.html
https://carnegie.ru/commentary/83344
https://www.inopressa.ru/article/30Nov2020/handelsblatt/vakzine.html
https://www.radiosvoboda.org/a/news-kreml-prydnistrovya-sandu/30976555.html
https://www.radiosvoboda.org/a/sandu-pro-moldovu-i-prydnistrov-ya/30976532.html