https://www.esri.ie/system/files/publications/RS169.pdf
https://www.brookings.edu/wp-content/uploads/2017/09/4_alganetal.pdf
http://www.europarl.europa.eu/pdf/eurobarometre/2018/oneyearbefore2019/eb89_one_year_before_2019_eurobarometer_en_results_annex.pdf
https://blogs.worldbank.org/en/opendata/march-2024-global-poverty-update-from-the-world-bank–first-esti