NFC Forum, NFC Analog Specification version 2.1, www.nfc-forum.org
NFC Forum, NFC Digital Protocol Technical Specification version 2.2, www.nfc-forum.org
NFC Forum, NFC Activity Technical Specification version 2.1, www.nfc-forum.org
NFC Forum, NFC Analog Specification version 2.1, www.nfc-forum.org
NFC Forum, NFC Digital Protocol Technical Specification version 2.2, www.nfc-forum.org
NFC Forum, NFC Activity Technical Specification version 2.1, www.nfc-forum.org