https://www.imf.org/~/media/Files/Publications/PP/2019/PPEA2019007.ashx
https://ecipe.org/blog/power-to-ukraine-rebuilding-ukraines-electricity-system/?mc_cid=3147beb3bb&mc_eid=286ad5ef5f
https://www.instituteforgovernment.org.uk/sites/default/files/publications/International-civil-service-effectiveness-index-July-17.pdf