@misc{rfc5196,
    series =    {Request for Comments},
    number =    5196,
    howpublished =  {RFC 5196},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC5196},
    url =       {https://www.rfc-editor.org/info/rfc5196},
    author =    {Mikko Lonnfors and Krisztian Kiss},
    title =     {{Session Initiation Protocol (SIP) User Agent Capability Extension to Presence Information Data Format (PIDF)}},
    pagetotal = 30,
    year =      2008,
    month =     sep,
    abstract =  {Presence Information Data Format (PIDF) defines a common presence data format for Common Profile for Presence (CPP) compliant presence protocols. This memo defines a PIDF extension to represent SIP User Agent capabilities. {[}STANDARDS-TRACK{]}},
}