https://www.eurointegration.com.ua/articles/2018/12/7/7090364/
https://www.liga.net/politics/opinion/dogovor-o-nedrujbe-ili-razvod-po-neoboyudnomu-jelaniyu
https://www.segodnya.ua/politics/bolshaya-druzhba-s-rossiey-nekrolog-1195768.html
https://www.gazeta.ru/comments/2018/12/07_e_12086923.shtml
https://www.gazeta.ru/business/2018/12/07/12086323.shtml
http://expert.ru/2018/12/7/opek-dogovorilsya-o-sokraschenii-dobyichi-nefti/