%% You should probably cite rfc2049 instead of this I-D.
@techreport{ietf-822ext-mime-conf-05,
    number =    {draft-ietf-822ext-mime-conf-05},
    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-822ext-mime-conf/05/},
    author =    {Ned Freed and Dr. Nathaniel S. Borenstein},
    title =     {{Multipurpose Internet Mail Extensions (MIME) Part Five: Conformance Criteria and Examples}},
    pagetotal = 24,
    year =      1996,
    month =     mar,
    day =       14,
    abstract =  {This set of documents, collectively called the Multipurpose Internet Mail Extensions, or MIME, redefines the format of messages. This fifth and final document describes MIME conformance criteria as well as providing some illustrative examples of MIME message formats, acknowledgements, and the bibliography. {[}STANDARDS-TRACK{]}},
}