https://theconversation.com/por-que-casi-siempre-gana-el-real-madrid-231523
https://www.mckinsey.com/~/media/McKinsey/Industries/Public%20and%20Social%20Sector/Our%20Insights/The%20social%20contract%20in%20the%2021st%20century/MGI-The-social-contract-in-the-21st-century-Full-report-final.pdf
https://www.transparency.org/en/news/how-cpi-scores-are-calculated
https://blogs.worldbank.org/en/opendata/charting-uzbekistan-s-path-to-poverty-reduction–insights-from-i