1. http://www.gartner.com/it/page.jsp?id=1622614
2. NFC Forum Specifications,
http://www.nfc-forum.org/specs/
3. The Classic RFID VingCard technology,
http://www.vingcard.com/page?id=4380
4. Mifare Standard Card IC MIF1 IC S50, Functional Specification, Revision 5.1, Philips semiconductors (May 2001)
5. International Civil Aviation Organization. Machine Readable Travel Documents, ICAO Document 9303, Part 1,2,3