1. Ahn von L. (2022 14 March). ‘Standing with Ukraine: A Message from CEO’ duolingo blog . Available at: https://blog.duolingo.com/duolingo-statement-ukraine/ (accessed 10 October 2022).
2. Andreikovets К. (2022 6 June). ‘Prime Minister Denys Shmyhal: English in Ukraine Can Get a Status of Business Language’ Бабель. Available at: https://babel.ua/en/news/79553-prime-minister-denis-shmygal-english-in-ukraine-can-get-business-status (accessed 1 September 2022).
3. Language, Status, and State Loyalty in Ukraine;Arel D.;Harvard Ukrainian Studies,2017
4. Armitage S. (2022 8 April). ‘“Ukrainian Has Become a Symbol”: Interest in Language Spikes Amid Russia Invasion’ The Guardian . Available at: https://www.theguardian.com/education/2022/apr/08/ukrainian-langauge-interest-spikes-support-country-war. (accessed 15 September 2022).
5. Ukrainian Language Legislation and the National Crisis;Azhniuk B.;Harvard Ukrainian Studies,2017