http://www.euractiv.com/section/energy/news/poland-puts-hopes-in-northern-gate-gas-pipeline/
https://www.chathamhouse.org/expert/comment/businesses-are-chipping-away-sanctions-crimea-and-donbas
http://ru.krymr.com/a/28059432.html
http://ru.krymr.com/a/28061064.html
http://ru.krymr.com/a/28060873.html
http://inosmi.ru/politic/20161018/238039596.html
http://www.ng.ru/economics/2016-10-18/1_stream.html
http://www.r-studies.org/cms/index.php?action=news/view_details&news_id=30053&lang=ukr