https://ecipe.org/publications/the-gini-trade-index-what-can-we-learn-from-a-new-trade-indicator/
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/899991/200713_BPDG_-_Border_Operating_Model_FINAL_1320_edit.pdf
http://www.euronews.com/2017/06/06/house-prices-signal-mixed-fortunes-for-europe
https://www.southcentre.int/wp-content/uploads/2022/09/RP143_Brazilian-Competition-Law-and-Access-to-Health-in-Brazil_EN.pdf