1. International Organization for Standardization: ISO/IEC 18092:2013: Information technology – Telecommunications and information exchange between systems – Near Field Communication – Interface and Protocol (NFCIP-1), March 2013
2. Japanese Industrial Standard: JIS X 6319-4:2010: Specification of implementation for integrated circuit(s) cards – Part 4: High speed proximity cards, October 2010
3. Oak, C.: The year 2014 was a tipping point for NFC payments, January 2015.
http://www.finextra.com/blogs/fullblog.aspx?blogid=10382
4. de Looper, C.: Mobile Payment Boasts Rosy Future, But Some Obstacles Remain in Play, January 2015.
http://www.techtimes.com/articles/24762/20150106/mobile-payments-worth-130-billion-2020.htm
5. Fischer, J.: NFC in Cell Phones: The New Paradigm for an Interactive World. IEEE Commun. Mag. 47(6), 22–28 (2009)