http://www.cadtm.org/IMG/pdf/Alexander_Sack_DETTE_ODIEUSE.pdf
https://www.nber.org/system/files/working_papers/w28598/w28598.pdf
https://www.google.com/url?esrc=s&q=&rct=j&sa=U&url=https://qjae.mises.org/article/38058.pdf&ved=2ahUKEwi53cSVj4mDAxV8if0HHW-UAycQFnoECAIQAg&usg=AOvVaw3bzxr6Ovv1WObVUWPS8YTB
https://ec.europa.eu/info/sites/info/files/annual-management-and-performance-report-2018.pdf