%% You should probably cite rfc4481 instead of this I-D.
@techreport{ietf-simple-future-05,
    number =    {draft-ietf-simple-future-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-simple-future/05/},
    author =    {Henning Schulzrinne},
    title =     {{Timed Presence Extensions to the Presence Information Data Format (PIDF) to Indicate Status Information for Past and Future Time Intervals}},
    pagetotal = 9,
    year =      2005,
    month =     dec,
    day =       21,
    abstract =  {The Presence Information Data Format (PIDF) defines a basic XML format for presenting presence information for a presentity. This document extends PIDF, adding a timed status extension (\textless{}timed-status\textgreater{} element) that allows a presentity to declare its status for a time interval fully in the future or the past. {[}STANDARDS-TRACK{]}},
}