%% You should probably cite rfc3003 instead of this I-D.
@techreport{nilsson-audio-mpeg-03,
    number =    {draft-nilsson-audio-mpeg-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-nilsson-audio-mpeg/03/},
    author =    {Martin Nilsson},
    title =     {{The audio/mpeg Media Type}},
    pagetotal = 5,
    year =      2000,
    month =     aug,
    day =       28,
    abstract =  {The audio layers of the MPEG-1 and MPEG-2 standards are in frequent use on the internet, but there is no uniform Multipurpose Internet Mail Extension (MIME) type for these files. The intention of this document is to define the media type audio/mpeg to refer to this kind of contents. {[}STANDARDS-TRACK{]}},
}