
https://www.strategie.gouv.fr/sites/strategie.gouv.fr/files/atoms/files/fs-livret-seminaire-soutenabilite-covid-19-mai-2020.pdf

https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef22024en.pdf

https://www.bushcenter.org/about-the-center/newsroom/press-releases/2020/06/statement-by-president-george-w-bush.html?orgid=305