«Grocery Click+Collect», Tesco, accessed April 1, 2016: tesco.com/collect/
51
liquidnet.com, accessed May 20, 2016.
52
liquidnet.com, accessed May 20, 2016.
53
Mike Gault «Forget Bitcoin – What Is the Blockchain and Why Should You Care?», Recode, July 5, 2015: recode.net/2015/07/05/forget-bitcoin-what-is-the-blockchain-and-why-should-you-care/