@misc{rfc4483,
    series =    {Request for Comments},
    number =    4483,
    howpublished =  {RFC 4483},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC4483},
    url =       {https://www.rfc-editor.org/info/rfc4483},
    author =    {Eric Burger},
    title =     {{A Mechanism for Content Indirection in Session Initiation Protocol (SIP) Messages}},
    pagetotal = 17,
    year =      2006,
    month =     may,
    abstract =  {This document defines an extension to the URL MIME External-Body Access-Type to satisfy the content indirection requirements for the Session Initiation Protocol (SIP). These extensions are aimed at allowing any MIME part in a SIP message to be referred to indirectly via a URI. {[}STANDARDS-TRACK{]}},
}