https://www.ecb.europa.eu/pub/pdf/other/ecb.escblegalconferenceproceedings201812.en.pdf
https://lawliberty.org/forum/why-economists-loathe-tariffs/
https://www.etui.org/sites/default/files/2020-08/Mitigating%20the%20COVID-19%20effect_2020_web.pdf
https://www.eca.europa.eu/Lists/News/NEWS1801_16/INSR_SSM2_EN.pdf