[1] RFC 8144 - Use of the Prefer Header Field in Web Distributed Authoring and Versioning (WebDAV) (2017-04-19 23:22:44 +09:00) https://tools.ietf.org/html/rfc8144#section-2.1

[2] RFC 3253 - Versioning Extensions to WebDAV (Web Distributed Authoring and Versioning) (2017-09-17 18:19:04 +09:00) https://tools.ietf.org/html/rfc3253#section-2.2.3

[3] RFC 3253 - Versioning Extensions to WebDAV (Web Distributed Authoring and Versioning) (2017-09-17 18:19:04 +09:00) https://tools.ietf.org/html/rfc3253#section-3.6

[4] RFC 3744 - Web Distributed Authoring and Versioning (WebDAV) Access Control Protocol (2017-09-24 17:45:41 +09:00) https://tools.ietf.org/html/rfc3744#section-9.1

[5] RFC 4791 - Calendaring Extensions to WebDAV (CalDAV) (2017-09-24 16:22:36 +09:00) https://tools.ietf.org/html/rfc4791#section-7.1