https://frc.org.uk/news/january-2018-(1)/investigation-into-the-audit-of-the-financial-stat
https://www.imf.org/-/media/Files/Publications/Fandd/Article/2022/June/Prasad.ashx
https://taxfoundation.org/flat-tax-state-income-tax-reform/
https://www.strath.ac.uk/media/1newwebsite/departmentsubject/strathclydebusinessschool/fraserofallander/FEC_Vol_41_No_2.pdf