https://www.esri.ie/system/files/publications/SUSTAT117.pdf
https://www.gov.uk/government/news/ip-and-brexit-the-facts
https://openknowledge.worldbank.org/bitstream/handle/10986/34055/9781464815393.pdf?sequence=2&isAllowed=y
https://pism.pl/webroot/upload/files/Biuletyn/PISM%20Bulletin%20no%20174%20(2091)%208%20November%20%202022.pdf