%% You should probably cite rfc5259 instead of this I-D.
@techreport{ietf-lemonade-convert-20,
    number =    {draft-ietf-lemonade-convert-20},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-lemonade-convert/20/},
    author =    {Alexey Melnikov and Peter Coates},
    title =     {{Internet Message Access Protocol - CONVERT Extension}},
    pagetotal = 30,
    year =      2008,
    month =     may,
    day =       20,
    abstract =  {CONVERT defines extensions to IMAP allowing clients to request adaptation and/or transcoding of attachments. Clients can specify the conversion details or allow servers to decide based on knowledge of client capabilities, on user or administrator preferences, or on server settings. {[}STANDARDS-TRACK{]}},
}