%% You should probably cite rfc4263 instead of this I-D.
@techreport{lilly-text-troff-04,
    number =    {draft-lilly-text-troff-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-lilly-text-troff/04/},
    author =    {Bruce Lilly},
    title =     {{Media Subtype Registration for Media Type text/troff}},
    pagetotal = 16,
    year =      2005,
    month =     may,
    day =       27,
    abstract =  {A text media subtype for tagging content consisting of juxtaposed text and formatting directives as used by the troff series of programs and for conveying information about the intended processing steps necessary to produce formatted output is described. This memo provides information for the Internet community.},
}