%% You should probably cite draft-ietf-sipcore-location-conveyance instead of this I-D. @techreport{ietf-sip-location-conveyance-13, number = {draft-ietf-sip-location-conveyance-13}, 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-sip-location-conveyance/13/}, author = {James Polk and Brian Rosen}, title = {{Location Conveyance for the Session Initiation Protocol}}, pagetotal = 46, year = 2009, month = mar, day = 9, abstract = {This document defines an extension to the Session Initiation Protocol (SIP) to convey geographic location information from one SIP entity to another SIP entity. The extension covers end to end conveyance as well as location-based routing, where SIP servers make routing decisions based on the location of the user agent clients.}, }