%% You should probably cite rfc4479 instead of this I-D.
@techreport{ietf-simple-presence-data-model-07,
    number =    {draft-ietf-simple-presence-data-model-07},
    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-presence-data-model/07/},
    author =    {Jonathan Rosenberg},
    title =     {{A Data Model for Presence}},
    pagetotal = 35,
    year =      2006,
    month =     jan,
    day =       23,
    abstract =  {This document defines the underlying presence data model used by Session Initiation Protocol (SIP) for Instant Messaging and Presence Leveraging Extensions (SIMPLE) presence agents. The data model provides guidance on how to map various communications systems into presence documents in a consistent fashion. {[}STANDARDS-TRACK{]}},
}