https://www.project-syndicate.org/commentary/putin-trump-g20-meeting-by-nina-l–khrushcheva-2017-07
https://verfassungsblog.de/demokratie-in-der-supra-eu/
https://www.brookings.edu/articles/are-convention-delegates-bound-to-their-presidential-candidate/
https://www.ips-journal.eu/index.php?id=340&L=0&tx_news_pi1%5Bnews%5D=3787&tx_news_pi1%5Bcontroller%5D=News&tx_news_pi1%5Baction%5D=detail&utm_source=newsletter&utm_medium=email&utm_campaign=en_712_20191011&cHash=eca24796e03c1aafa62bc0db43cdb29c