%% You should probably cite rfc7459 instead of this I-D.
@techreport{ietf-geopriv-uncertainty-03,
    number =    {draft-ietf-geopriv-uncertainty-03},
    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-geopriv-uncertainty/03/},
    author =    {Martin Thomson and James Winterbottom},
    title =     {{Representation of Uncertainty and Confidence in PIDF-LO}},
    pagetotal = 36,
    year =      2014,
    month =     sep,
    day =       16,
    abstract =  {The key concepts of uncertainty and confidence as they pertain to location information are defined. Methods for the manipulation of location estimates that include uncertainty information are outlined. This draft normatively updates the definition of location information representations defined in RFC 4119 and RFC 5491. It also deprecates related terminology defined in RFC 3693.},
}