%% You should probably cite rfc7459 instead of this I-D.
@techreport{ietf-geopriv-uncertainty-02,
    number =    {draft-ietf-geopriv-uncertainty-02},
    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/02/},
    author =    {Martin Thomson and James Winterbottom},
    title =     {{Representation of Uncertainty and Confidence in PIDF-LO}},
    pagetotal = 35,
    year =      2014,
    month =     aug,
    day =       14,
    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.},
}