https://www.omfif.org/analysis/commentary/2017/june/uk-risks-falling-behind-europe/
https://www.economiesuisse.ch/de/artikel/hohe-loehne-tiefe-ungleichheit-und-ein-attraktiver-standort
https://ecipe.org/wp-content/uploads/2020/07/ECI_20_OccPaper_04_2020_LY05.pdf