https://www.ussif.org/files/GSIR_Review2018F.pdf
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwiYtOnpoqT1AhXV7rsIHfpxDhcQFnoECAcQAQ&url=https%3A%2F%2Fosf.io%2Fpreprints%2Fsocarxiv%2F8nzb4%2Fdownload&usg=AOvVaw1M87IVrQbHicDueJuLi74b
https://www.nature.com/articles/s41598-021-00053-8.pdf
https://www.imf.org/-/media/Files/Publications/Fandd/Article/2022/September/Prasad-New-Era-Money.ashx