https://www.boeckler.de/pdf/p_imk_study_55_2017.pdf
https://www.bruegel.org/wp-content/uploads/2021/05/PC-2021-11-ecofin-210521.pdf
http://invs.santepubliquefrance.fr/publications/etat_sante_2017/ESP2017_Synthese.pdf
http://cep.lse.ac.uk/pubs/download/brexit11.pdf