@techreport{trossen-sipping-ondemand-01,
    number =    {draft-trossen-sipping-ondemand-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-trossen-sipping-ondemand/01/},
    author =    {Dirk Trossen and Henning Schulzrinne},
    title =     {{On-Demand Access Authorization for SIP Event Subscriptions}},
    pagetotal = 12,
    year =      2004,
    month =     aug,
    day =       25,
    abstract =  {A target or presentity may want to temporarily allow limited access to its location or presence information to a third party. We will describe in this document use cases and solutions (focusing on the delivery of geospatial information and presence). We will further outline the relation to ongoing SIMPLE and GEOPRIV work.},
}