
https://theconversation.com/el-lanzamiento-de-penaltis-en-el-futbol-tiene-mas-de-ciencia-que-de-loteria-229154

https://www.brookings.edu/articles/increasing-ssi-benefits-is-a-more-effective-approach-to-reducing-poverty-than-an-enhanced-social-security-minimum-benefit/

https://static1.squarespace.com/static/56eddde762cd9413e151ac92/t/5ee543957ff72b39af3a76d6/1592083356837/Bloody+Well+Pay+Them+-+Peter+M.+Jaworski.pdf