http://www.ips-journal.eu/topics/european-union/article/show/no-more-penny-pinching-2076/
https://www.piie.com/blogs/realtime-economics/if-markets-are-right-about-long-real-rates-public-debt-ratios-will
https://www.ips-journal.eu/index.php?id=340&L=0&tx_news_pi1%5Bnews%5D=3950&tx_news_pi1%5Bcontroller%5D=News&tx_news_pi1%5Baction%5D=detail&utm_source=newsletter&utm_medium=email&utm_campaign=en_737_20191231&cHash=951ba3d83db8a5766c75dc246e3d2c7b
https://www.economiesuisse.ch/de/artikel/schuldentricks-und-standortsorgen-deutschland-im-kreuzfeuer