https://www.economiesuisse.ch/de/artikel/faktencheck-bilaterale-iii
https://www.ips-journal.eu/index.php?id=338&L=0&tx_news_pi1%5Bnews%5D=2949&tx_news_pi1%5Bcontroller%5D=News&tx_news_pi1%5Baction%5D=detail&cHash=e9bd9406184251179b2e31948b34043e
http://www.ips-journal.eu/regions/global/article/show/davos-2018-call-the-doctor-2544/
https://nationalinterest.org/feature/vladimir-putin-real-lessons-75th-anniversary-world-war-ii-162982