Article 31

1. [Original Texts; Official Texts]
(a) This Treaty shall be signed in a single original in the English, Arabic, Chinese, French, Russian and Spanish languages, all texts being equally authentic.
(b) An official text in a language not referred to in subparagraph (a) that is an official language of a Contracting Party shall be established by the Director General after consultation with the said Contracting Party and any other interested Contracting Party.

2. [Time Limit for Signature] This Treaty shall remain open for signature at the headquarters of the Organization for one year after its adoption.