BEGIN:VCALENDAR
BEGIN:VEVENT
UID:event_rrule_recurrence_id
SUMMARY:ArbeitXXX
RRULE:FREQ=WEEKLY;UNTIL=20140806T060000Z
DTSTART;TZID=Europe/Berlin:20140630T070000
DTEND;TZID=Europe/Berlin:20140630T120000
EXDATE;TZID=Europe/Berlin:20140714T070000
END:VEVENT
END:VCALENDAR