
https://www.strath.ac.uk/media/1newwebsite/departmentsubject/strathclydebusinessschool/fraserofallander/FEC_Vol_41_No_2.pdf

http://invs.santepubliquefrance.fr/publications/etat_sante_2017/ESP2017_Synthese.pdf

https://blogs.lse.ac.uk/brexit/2019/12/03/a-missed-opportunity-revisiting-the-euro-referendum-that-never-was-from-a-historical-perspective/