@techreport{beckmann-sip-reg-event-01,
    number =    {draft-beckmann-sip-reg-event-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-beckmann-sip-reg-event/01/},
    author =    {Georges Mayer and Michael Beckmann},
    title =     {{Registration Event package}},
    pagetotal = 9,
    year =      2002,
    month =     may,
    day =       8,
    abstract =  {This draft defines an event package that allows a network entity to request to be notified of changes in the registration state of a particular user. Subscription and notification of registration state is supported by defining an event package within the general SIP event notification event framework. This event package is based on the Presence event package as specified in {[}3{]} and therefore this draft only describes the deltas to the Presence event package.},
}