
https://www.resolutionfoundation.org/app/uploads/2019/11/The-shape-of-things-to-come.pdf

https://www.brookings.edu/articles/the-hutchins-center-explains-the-neutral-rate-of-interest/

https://www.ccomptes.fr/system/files/2019-04/20190418-refere-2018-4023-plan-relance-autoroutier.pdf