1. https://www.coindesk.com/jamaica-stock-exchange-to-pilot-bitcoin-and-ether-trading
2. https://www.vedomosti.ru/technology/articles/2019/04/03/798189-razrabotchikam-uprostyat-sozdanie-prilozhenii
3. http://www3.weforum.org/docs/WEF_Central_Bank_Activity_in_Blockchain_DLT.pdf
4. https://blog.bitmex.com/xbtu19-and-ethm19-auto-deleveraging-events-2-april-2019/
5. https://xbtprovider.com/news/first-litecoin-and-xrp-tracking-exchange-traded-products-available-to-eu-investors-via-regulated-exchange-owned-by-boerse-stuttgart