1. Standardization, compatibility, and innovation;Farrell;RAND J. Econ.,1985
2. RFC 675: Specification of Internet Transmission Control Program. 1974. http://www.ietf.org/rfc/rfc0675.txt. (Accessed May 2016).
3. Health Intersections HL7 needs a fresh look because V3 has failed. 2011. http://www.healthintersections.com.au/?p=476. (Accessed May 2016).
4. Health Level 7. HL7’s Standards Licensed At No Cost. 2013. http://www.hl7.org/implement/standards/nocost.cfm. (Accessed May 2016).
5. No small change for the health information economy;Mandl;N. Engl. J. Med.,2009