Many of the references link to draft IETF documents that are now RFCs, for example:
[JWT] Jones, M., Bradley, J., and N. Sakimura, “JSON Web Token (JWT),” draft-ietf-oauth-json-web-token (work in progress), July 2014 (HTML).
which links to http://tools.ietf.org/html/draft-ietf-oauth-json-web-token
We should update these links references to state the final RFC number & update the link to point to the final document, i.e. with that example https://tools.ietf.org/html/rfc7519