%% You should probably cite rfc6854 instead of this I-D.
@techreport{leiba-5322upd-from-group-04,
    number =    {draft-leiba-5322upd-from-group-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-leiba-5322upd-from-group/04/},
    author =    {Barry Leiba},
    title =     {{Update to Internet Message Format to Allow Group Syntax in the "From:" and "Sender:" Header Fields}},
    pagetotal = 7,
    year =      2012,
    month =     sep,
    day =       9,
    abstract =  {The Internet Message Format (RFC 5322) allows "group" syntax in some email header fields, such as "To:" and "CC:", but not in "From:" nor "Sender:". This document updates RFC 5322 to relax that restriction, allowing group syntax in those latter fields.},
}