https://www.imf.org/-/media/Files/Publications/DP/2021/English/EMPSOUPEA.ashx
https://wiiw.ac.at/rebuilding-ukraine-s-infrastructure-after-the-war-dlp-6621.pdf
https://www.occrp.org/en/daily/17580-dr-congo-exposes-tens-of-thousands-of-ghost-workers-across-government-ministries