O'Leary. «"Bitcoin, the City traders' anarchic new toy"». Arxivat de l'original el 2013-01-28. [Consulta: 29 gener 2013]. «Workers at Morgan Stanley and Goldman Sachs in London and New York have been visiting online Bitcoin exchanges as often as 30 times a day, according to documents seen by Reuters. Neither bank wanted to comment. Employees at almost all the major international banks and numerous trading and investment firms have shown interest.»
Selgin, George. «Quasi-Commodity Money». Prepared for the Liberty Fund symposium, "In Search of a Monetary Constitution Revisited," Freiburg, Germany, April 19-22, 2012. Highly preliminary: please do not quote. [Consulta: 12 juny 2012].
O'Leary. «"Bitcoin, the City traders' anarchic new toy"». Arxivat de l'original el 2013-01-28. [Consulta: 29 gener 2013]. «Workers at Morgan Stanley and Goldman Sachs in London and New York have been visiting online Bitcoin exchanges as often as 30 times a day, according to documents seen by Reuters. Neither bank wanted to comment. Employees at almost all the major international banks and numerous trading and investment firms have shown interest.»