1. https://cointelegraph.com/news/bitcoin-first-as-ledgerx-launches-regulated-physical-futures-on-us-market
2. http://alrf.ru/news/eksperty-ayur-obsudili-voprosy-nalogooblozheniya-kriptovalyut/
3. https://www.ccn.com/news/blockchaincom-launches-speedy-crypto-trading-platform-the-pit/2019/07/30/
4. https://beincrypto.com/cryptocurrency-firms-in-germany-will-need-bafin-license-to-operate/
5. https://blockchainua.com/