@techreport{rosen-sipping-cap-04,
    number =    {draft-rosen-sipping-cap-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-rosen-sipping-cap/04/},
    author =    {Brian Rosen and Henning Schulzrinne and Hannes Tschofenig},
    title =     {{Session Initiation Protocol (SIP) Event Package for the Common Alerting Protocol (CAP)}},
    pagetotal = 15,
    year =      2009,
    month =     jul,
    day =       13,
    abstract =  {The Common Alerting Protocol (CAP) is an XML document format for exchanging emergency alerts and public warnings. This document allows CAP documents to be distributed via the event notification mechanism available with the Session Initiation Protocol (SIP).},
}