%% You should probably cite draft-kosonen-mobile-xmf-mediatype instead of this I-D.
@techreport{kosonen-mobile-xmf-mimetype-00,
    number =    {draft-kosonen-mobile-xmf-mimetype-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-kosonen-mobile-xmf-mimetype/00/},
    author =    {Timo Kosonen and Tom White},
    title =     {{Registration of MIME media type audio/mobile-xmf}},
    pagetotal = 6,
    year =      2005,
    month =     oct,
    day =       4,
    abstract =  {The MIDI Manufacturers Association (MMA) and the Association of Music Electronics industry (AMEI) have produced the Mobile XMF standard {[}1{]}. The Mobile XMF standard has been developed particularly for mobile MIDI {[}7{]} applications. Mobile XMF is a very compact media type providing high quality synthetic audio content for music downloading and messaging applications that require MIME registration.},
}