https://www.bruegel.org/sites/default/files/2023-06/PB%2012%202023.pdf
https://www.gsb.stanford.edu/gsb-box/route-download/621098
CONTEXT ROLE OF GERMANY THE TAXES CONSIDERED GRAND THEMES OF THE EUROPEAN DIALOGUE ECONOMIC ...
https://institutdelors.eu/wp-content/uploads/2022/04/PB_220420_What-the-EU-budget-can-and-cannot-do-in-response-to-the-war-in-Ukraine_Rubio_EN.pdf