http://ec.europa.eu/economy_finance/publications/pages/publication16004_en.pdf
https://wiiw.ac.at/public-expenditure-and-tax-policy-for-the-post-war-reconstruction-of-ukraine-dlp-6573.pdf
http://www.chinese-embassy.org.uk/eng/ambassador/t1720992.htm
https://www.ifw-kiel.de/fileadmin/Dateiverwaltung/IfW-Publications/-ifw/Kiel_Working_Paper/2022/KWP_2218_Which_countries_help_Ukraine_and_how_/KWP_2218_Trebesch_et_al_Ukraine_Support_Tracker.pdf