https://www.brookings.edu/wp-content/uploads/2022/09/Obstfeld-Zhou-Conference-Draft-BPEA-FA22.pdf
https://www.ips-journal.eu/topics/economy-and-ecology/how-credit-rating-agencies-could-derail-the-economic-recovery-5053/?utm_campaign=en_876_20210323&utm_medium=email&utm_source=newsletter
http://visual.ons.gov.uk/trading-places-uk-goods-trade-with-eu-partners/
https://www.imk-boeckler.de/download-proxy-for-faust/download-pdf?url=http%3A%2F%2F217.89.182.78%3A451%2Fabfrage_digi.fau%2Fp_imk_report_152e_2020.pdf%3Fprj%3Dhbs-abfrage%26ab_dm%3D1%26ab_zeig%3D8849%26ab_diginr%3D8482