https://www.esri.ie/system/files/publications/SUSTAT117.pdf
http://www.ips-journal.eu/regions/europe/article/show/battle-of-the-bulldogs-2063/
https://www.tandfonline.com/doi/epdf/10.1080/01402382.2023.2168945?needAccess=true&role=button
https://www.bloomberg.com/news/features/2021-09-02/food-prices-driven-up-by-global-worker-shortage-brexit