Christer Holmberg, Eric W. Burger, Hadriel Kaplan. Session Initiation Protocol (SIP) INFO Method and Package Framework. RFC, 6086:1-36, January 2011. [doi]
@article{rfc6086, title = {Session Initiation Protocol (SIP) INFO Method and Package Framework}, author = {Christer Holmberg and Eric W. Burger and Hadriel Kaplan}, year = {2011}, month = {January}, doi = {10.17487/RFC6086}, url = {https://doi.org/10.17487/RFC6086}, researchr = {https://researchr.org/publication/rfc6086}, cites = {0}, citedby = {0}, journal = {RFC}, volume = {6086}, pages = {1-36}, }