3. A person is considered as representing an international organization for the purpose of adopting or authenticating the text of a treaty, or expressing the consent of that organization to be bound by a treaty, if:
(a) that person produces appropriate full powers; or
(b) it appears from the circumstances that it was the intention of the States and international organizations concerned to consider that person as representing the organization for such purposes, in accordance with the rules of the organization, without having to produce full powers.
Article 8
Subsequent confirmation of an act performed
without authorization
An act relating to the conclusion of a treaty performed by a person who cannot be considered
under article 7 as authorized to represent a State or an international organization for that purpose is without legal effect unless afterwards confirmed by that State or that organization.
Article 9
Adoption of the text
1. The adoption of the text of a treaty takes place by the consent of all the States and international organizations or, as the case may be, all the organizations participating in its drawing up except as
provided in paragraph 2.
2.The adoption of the text of a treaty at an international conference takes place in accordance with the procedure agreed upon by the participants in that conference. If, however, no agreement is reached on any such procedure, the adoption of the text shall take place by the vote of two thirds of the participants present and voting unless by the same majority they shall decide to apply a different rule.
Article 10
Authentication of the text
1. The text of a treaty between one or more States and one or more international organizations is established as authentic and definitive:
(a) by such procedure as may be provided for in the text or agreed upon by the States and organizations participating in its drawing up; or
(b) failing such procedure, by the signature, signature ad referendum or initialling by the representatives of those States and those organizations of the text of the treaty or of the Final Act of a conference incorporating the text.
2.The text of a treaty between international organizations is established as authentic and definitive:
