Article 16

1.
a) This Protocol shall be signed in a single copy in the English, French and Spanish languages, and shall be deposited with the Director General when it ceases to be open for signature at Madrid. The texts in the three languages shall be equally authentic.
b) Official texts of this Protocol shall be established by the Director General, after consultation with the interested governments and organizations, in the Arabic, Chinese, German, Italian, Japanese, Portuguese and Russian languages, and in such other languages as the Assembly may designate.

2. This Protocol shall remain open for signature at Madrid until December 31, 1989.

3. The Director General shall transmit two copies, certified by the Government of Spain, of the signed texts of this Protocol to all States and intergovernmental organizations that may become party to this Protocol.

4. The Director General shall register this Protocol with the Secretariat of the United Nations.

5. The Director General shall notify all States and international organizations that may become or are party to this Protocol of signatures, deposits of instruments of ratification, acceptance, approval or accession, the entry into force of this Protocol and any amendment thereto, any notification of denunciation and any declaration provided for in this Protocol.