Consent to be bound by a treaty expressed by accession
The consent of a State to be bound by a treaty is expressed by accession when:
(a)
the treaty provides that such consent may be expressed by that State by means of accession;
(b)
it is otherwise established that the negotiating States were agreed that such consent may be
expressed by that State by means of accession; or
(c)
all the parties have subsequently agreed that such consent may be expressed by that State by
means of accession.
Official text
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In force from 23 May 1969
Source page 7