%% You should probably cite rfc2779 instead of this I-D.
@techreport{ietf-impp-reqts-04,
    number =    {draft-ietf-impp-reqts-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-ietf-impp-reqts/04/},
    author =    {Sonu Aggarwal and Gordon Mohr and Mark Day and Jesse R. Vincent},
    title =     {{Instant Messaging / Presence Protocol Requirements}},
    pagetotal = 26,
    year =      1999,
    month =     dec,
    day =       10,
    abstract =  {This document defines a minimal set of requirements that IMPP must meet. This memo provides information for the Internet community.},
}