Artikel IV

(1). The Convention shall remain open for signature at the Headquarters of the Organization from 1 November 1979 until 31 October 1980 and shall thereafter remain open for accession. States may become Parties to the Convention by:
(a) signature without reservation as to ratification, acceptance or approval; or
(b) signature subject to ratification, acceptance or approval, followed by ratification, acceptance or approval; or
(c) accession.
(2). Ratification, acceptance, approval or accession shall be effected by the deposit of an instrument to that effect with the Secretary-General.
(3). The Secretary-General shall inform States of any signature or of the deposit of any instrument of ratification, acceptance, approval or accession and the date of its deposit.