https://knowledge.wharton.upenn.edu/article/politics-pandemics-countries-respond-better-others/
http://blog.lboro.ac.uk/crcc/general-election/media-coverage-of-the-2017-general-election-campaign-report-4/?utm_source=twitter&utm_medium=social&utm_campaign=ge2017&utm_content=coverage#coverage
https://euractiv.fr/news/pourquoi-lindustrie-automobile-europeenne-est-elle-en-crise/
https://www.certifico.com/component/attachments/download/30294