https://repository.uneca.org/ds2/stream/?#/documents/c4d5119f-1374-435d-900a-4e6e683a1b41/page/1
https://mid.ru/en/foreign_policy/news/themes/id/1810694/
http://www.ips-journal.eu/storage/topics/european-union/article/show/stars-in-their-eyes-2515/
https://www.slideshare.net/SITEStockholm/the-russian-economy-under-putin-91262698