1. Bradford,
T.
, and
HungC..
2008.
Payment systems research briefing: Developments in merchant acquiring.
Federal Reserve Bank of Kansas City. Available at: https://www.kansascityfed.org/PUBLICAT/PSR/Briefings/PSR-BriefingSept08.pdf
2. Center for Audit Quality (CAQ).
2014.
Cybersecurity and the external audit. CAQ Alert #2014-3.
Available at: https://www.thecaq.org/caq-alert-2014-03-cybersecurity-and-external-audit
3. Cheney,
J. S.
2010.
Heartland payment systems: Lessons learned from a data breach.
(January 1, 2010). Federal Reserve Bank of Philadelphia, Payment Cards Center Discussion Paper No. 10-1. Available at: https://ssrn.com/abstract=1540143
4. Dash,
E.
, and
StoneB..
2009.
Credit card processor says some data was stolen. New York Times. (January 20).
5. Davis v. Heartland Payment Systems Inc., Carr, R. O., and R.H.B. Baldwin (Davis v. Heartland).
2009.
Available at: http://securities.stanford.edu/filings-case.html?id=104260