CalDAV Specifications[5] CALDAV-ACCESS, Calendaring Extensions to WebDAV. http://www.ietf.org/internet-drafts/draft-dusseault-caldav-14.txt.[6] CALDAV-SCHED, Scheduling Extensions to CalDAV http://www.ietf.org/internet-drafts/draft-desruisseaux-caldav-sched-02.txt.
[5] CALDAV-ACCESS, Calendaring Extensions to WebDAV. http://www.ietf.org/internet-drafts/draft-dusseault-caldav-14.txt.
[6] CALDAV-SCHED, Scheduling Extensions to CalDAV http://www.ietf.org/internet-drafts/draft-desruisseaux-caldav-sched-02.txt.