1. Agriledger. (2019). Retrieved April 3, 2019, from
http://www.agriledger.io/home/
2. Almeida. (2018). Retrieved April 3, 2019, from
https://www.bloomberg.com/news/articles/2018-01-23/first-cryptocurrency-freight-deal-takes-russian-wheat-to-turkey
3. Androulaki, E., Barger, A., Bortnikov, V., Cachin, C., Christidis, K., De Caro, A., et al. (2018, April). Hyperledger fabric: A distributed operating system for permissioned blockchains. In Proceedings of the Thirteenth EuroSys Conference (p. 30). ACM.
4. Antonopoulos. (2014). Retrieved April 3, 2019, from
https://www.oreilly.com/library/view/mastering-bitcoin/9781491902639/ch01.html
5. Archive. (2008). Retrieved April 3, 2019, from
https://archive.is/mJmk4