
https://www.mckinsey.com/business-functions/organization/our-insights/purpose-shifting-from-why-to-how#

https://www.sciencemag.org/news/2020/04/reopening-puts-germany-s-much-praised-coronavirus-response-risk?utm_campaign=news_daily_2020-04-27&et_rid=682362580&et_cid=3304734#

https://www.touslesjourscurieux.fr/cetait-le-temps-de-la-grippe-espagnole/