%% You should probably cite rfc4685 instead of this I-D.
@techreport{snell-atompub-feed-thread-12,
    number =    {draft-snell-atompub-feed-thread-12},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-snell-atompub-feed-thread/12/},
    author =    {James M. Snell},
    title =     {{Atom Threading Extensions}},
    pagetotal = 12,
    year =      2006,
    month =     may,
    day =       25,
    abstract =  {This memo presents a mechanism that allows feeds publishers to express threaded discussions within the Atom Syndication Format. {[}STANDARDS-TRACK{]}},
}