http://www.rbc.ru/newspaper/2017/10/19/59e778669a79470fd36bcf1c
https://www.kommersant.ru/doc/3442487
Four years on from its Euromaidan revolution, Ukraine is fighting for survival as an independent and viable state.
https://www.chathamhouse.org/publication/struggle-for-ukraine
https://newtimes.ru/articles/detail/121557
http://www.eurointegration.com.ua/articles/2017/10/18/7072435/
https://focus.ua/society/378602/
https://www.depo.ua/ukr/life/istoriya-dnya-yak-ssha-vityagnuli-z-rosiyi-zolotu-zhilu-20171018659715
http://www.kasparov.ru/material.php?id=59E7016A0B06D
https://www.kommersant.ru/doc/3441596