%% You should probably cite rfc7035 instead of this I-D.
@techreport{ietf-geopriv-relative-location-04,
    number =    {draft-ietf-geopriv-relative-location-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-ietf-geopriv-relative-location/04/},
    author =    {Martin Thomson and Brian Rosen and Dorothy Stanley and Gabor Bajko and Allan Thomson},
    title =     {{Relative Location Representation}},
    pagetotal = 34,
    year =      2013,
    month =     mar,
    day =       19,
    abstract =  {This document defines an extension to PIDF-LO (RFC4119) for the expression of location information that is defined relative to a reference point. The reference point may be expressed as a geodetic or civic location, and the relative offset may be one of several shapes. Optionally, a reference to a secondary document (such as a map image) can be included, along with the relationship of the map coordinate system to the reference/offset coordinate system to allow display of the map with the reference point and the relative offset. Also included in this document is a Type/Length/Value (TLV) representation of the relative location for use in other protocols that use TLVs.},
}