%% You should probably cite rfc4961 instead of this I-D.
@techreport{wing-behave-symmetric-rtprtcp-03,
    number =    {draft-wing-behave-symmetric-rtprtcp-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-wing-behave-symmetric-rtprtcp/03/},
    author =    {Dan Wing},
    title =     {{Symmetric RTP / RTP Control Protocol (RTCP)}},
    pagetotal = 6,
    year =      2007,
    month =     apr,
    day =       16,
    abstract =  {This document recommends using one UDP port pair for both communication directions of bidirectional RTP and RTP Control Protocol (RTCP) sessions, commonly called "symmetric RTP" and "symmetric RTCP". This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.},
}