https://ukandeu.ac.uk/wp-content/uploads/2020/06/Mind-the-values-gap.pdf
https://institute.global/news/customs-and-exiting-european-union
https://www.esri.ie/system/files/publications/QEC2019SPR_SA_Bergin.pdf
https://big-europe.eu/publication/bringing-the-greater-european-family-together/download