Session Initiation Protocol (SIP) Extension Header Field for Registering Non-Adjacent Contacts. - Dean Willis; Bernie Hoeneisen (RFC, 2002)

Change Process for the Session Initiation Protocol (SIP). - Allison Mankin; Scott O. Bradner; Rohan Mahy; Dean Willis; Jörg Ott; Brian Rosen (RFC, 2002)

Session Initiation Protocol (SIP) Extension Header Field for Service Route Discovery During Registration. - Dean Willis; Bernie Hoeneisen (RFC, 2003)

Requirements for Consent-Based Communications in the Session Initiation Protocol (SIP). - Jonathan D. Rosenberg; Gonzalo Camarillo; Dean Willis (RFC, 2006)

Cryptographically Transparent Session Initiation Protocol (SIP) Proxies. - Vijay K. Gurbani; Dean Willis; François Audet (ICC, 2007)

A Framework for Consent-Based Communications in the Session Initiation Protocol (SIP). - Jonathan D. Rosenberg; Gonzalo Camarillo; Dean Willis (RFC, 2008)

Requesting Answering Modes for the Session Initiation Protocol (SIP). - Dean Willis; Andrew Allen (RFC, 2008)

An Extension to Session Initiation Protocol (SIP) Events for Conditional Event Notification. - Aki Niemi; Dean Willis (RFC, 2010)

An Extensible Markup Language (XML) Configuration Access Protocol (XCAP) Diff Event Package. - Jari Urpalainen; Dean Willis (RFC, 2010)

Concepts and Terminology for Peer-to-Peer SIP (P2PSIP). - David A. Bryan; Philip Matthews; Eunsoo Shim; Dean Willis; Spencer Dawkins (RFC, 2016)