
https://economy-finance.ec.europa.eu/document/download/f5827354-8501-49cb-bf2d-13f2f7a9444f_en?filename=dp199_en.pdf

http://www.dw.com/en/turkey-eu-relations-which-countries-are-for-or-against-turkish-accession/a-40381533

https://www.friendsofeurope.org/wp/wp-content/uploads/2020/01/2020_FoE_SEC_PUB_Transatlantic_web.pdf