BofE: How the SNB rigs the Swiss franc FX market

Bank of England

Financial Stability Paper No. 41 – January 2017

Gauging market dynamics using trade repository data: the case of the Swiss franc de-pegging – Olga Cielinska, Andreas Joseph, Ujwal Shreyas, John Tanner and Michalis Vasios 

http://www.bankofengland.co.uk/financialstability/Pages/fpc/fspapers/fs_paper41.aspx

See also: FX ‘Cartel’ Traders Said to Face U.S. Rigging Charges
https://www.bloomberg.com/news/articles/2017-01-10/-cartel-currency-traders-said-to-face-u-s-rigging-charges