%% You should probably cite draft-yusef-sipcore-sip-oauth-04 instead of this revision.
@techreport{yusef-sipcore-sip-oauth-00,
    number =    {draft-yusef-sipcore-sip-oauth-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-yusef-sipcore-sip-oauth/00/},
    author =    {Rifaat Shekh-Yusef and Victor Pascual},
    title =     {{The Session Initiation Protocol (SIP) OAuth}},
    pagetotal = 18,
    year =      2014,
    month =     may,
    day =       26,
    abstract =  {The Session Initiation Protocol (SIP) uses a challenge-response framework to authenticate the user, but it does not have an authorization framework to control the user's access to various services in the system. This document defines an authorization framework for SIP that is based on the OAuth 2.0 framework.},
}