1. Department of Payment System, National Bank of Poland: Information about payment cards 2nd quarter 2016 (2016). (in Polish)
2. EMVCo: EMV Specifications. http://www.emvco.com/specifications.aspx
3. ISO 7810 Specification. http://www.iso.org/iso/catalogue_detail?csnumber=31432
4. ISO 14443 Specification. http://www.iso.org/iso/home/store/catalogue_ics/catalogue_detail_ics.htm?csnumber=70170
5. Android Pay homepage. https://www.android.com/intl/pl_pl/pay/