The following publications are possibly variants of this publication:
- Specifying Civic Address Extensions in the Presence Information Data Format Location Object (PIDF-LO)James Winterbottom, Martin Thomson, Richard L. Barnes, Brian Rosen, Robins George. rfc, 6848:1-21, January 2013. [doi]
- Revised Civic Location Format for Presence Information Data Format Location Object (PIDF-LO)Martin Thomson, James Winterbottom. rfc, 5139:1-14, February 2008. [doi]
- GEOPRIV Presence Information Data Format Location Object (PIDF-LO) Usage Clarification, Considerations, and RecommendationsJames Winterbottom, Martin Thomson, Hannes Tschofenig. rfc, 5491:1-28, March 2009. [doi]
- Representation of Uncertainty and Confidence in the Presence Information Data Format Location Object (PIDF-LO)Martin Thomson, James Winterbottom. rfc, 7459:1-39, February 2015. [doi]
- RPID: Rich Presence Extensions to the Presence Information Data Format (PIDF)Henning Schulzrinne, Vijay K. Gurbani, Paul Kyzivat, Jonathan D. Rosenberg. rfc, 4480:1-37, July 2006. [doi]
- Timed Presence Extensions to the Presence Information Data Format (PIDF) to Indicate Status Information for Past and Future Time IntervalsHenning Schulzrinne. rfc, 4481:1-9, July 2006. [doi]