http://www.bankofengland.co.uk/publications/Documents/inflationreport/2017/aug.pdf
https://www.socialeurope.eu/the-discreet-but-dubious-charm-of-tax-treaties
http://eurodad.org/files/pdf/58d39b90e6546.pdf
https://www.econstor.eu/bitstream/10419/283282/1/1877510009.pdf