https://ceias.eu/beyond-the-dumpling-alliance/
http://www.ecb.europa.eu/pub/pdf/other/ebart201703_01.en.pdf
https://www.economiesuisse.ch/de/artikel/faktencheck-bilaterale-iii
http://www.css.ethz.ch/content/dam/ethz/special-interest/gess/cis/center-for-securities-studies/pdfs/CSSAnalyse225-EN.pdf