1. Bhatla TP, Prabhu V, Dua A (2003) Understanding credit card frauds. Cards Business Review # 2003–1. http://www.popcenter.org/problems/credit_card_fraud/PDFs/Bhatla.pdf
2. Card Verification Methods: PIN vs. Signature vs. None http://www.emv411.com/2012/07/13/card-verification-methods-pin-vs-signature-vs-none/ . Accessed 2 Feb 2014
3. EMV. http://en.wikipedia.org/wiki/EMV . Accessed 15 Jan 2014
4. EMVCo (2011) EMV integrated circuit card specifications for payment systems (version 4.2). https://www.emvco.com/specifications.aspx?id=223 . Accessed 3 Feb 2014
5. European Central Bank (2012) Report on card fraud. http://www.ecb.europa.eu/pub/pdf/other/cardfraudreport201207en.pdf . Accessed 28 Jan 2014