http://www.ipg-journal.de/regionen/europa/artikel/detail/ein-bisschen-mehr-als-freundschaft-2458/
https://www.opendemocracy.net/en/oureconomy/how-misleading-economic-analysis-corrupting-our-democracy/?utm_source=Daily+Newsletter&utm_campaign=306129eb08-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-306129eb08-407405485
https://www.ips-journal.eu/index.php?id=340&L=0&tx_news_pi1%5Bnews%5D=3569&tx_news_pi1%5Bcontroller%5D=News&tx_news_pi1%5Baction%5D=detail&cHash=d26f1f115fd9e4efe0c4ae0efcba57a2