Artikel 9

1. The benefit of the provisions of social security conventions which remain in force by virtue of Article 6, paragraph 3, and the provisions of social security conventions concluded by virtue of Article 7, paragraph 1, may be extended, by agreement between the Parties bound thereby, to nationals of every Contracting Party.
2. Annex V specifies the provisions of social security conventions which remain in force by virtue of Article 6, paragraph 3, and whose application is to be extended, in accordance with paragraph 1 of the present Article, to nationals of every Contracting Party.
3. The Contracting Parties concerned shall give notice, in accordance with the provisions of Article 81, paragraph 1, of the provisions of the social security conventions concluded by them by virtue of Article 7, paragraph 1, whose application is extended, in accordance with paragraph 1 of the present Article, to nationals of every Contracting Party. The provisions of the said conventions shall be indicated in Annex V.
4. Two or more Contracting Parties which are bound by the provisions specified in Annex V may, by mutual agreement and in respect of themselves, make appropriate amendments to this Annex by giving notice thereof in accordance with the provisions of Article 81, paragraph 1.