A/RES/61/106 2. An amendment adopted and approved in accordance with paragraph 1 of this article shall enter into force on the thirtieth day after the number of instruments of acceptance deposited reaches two thirds of the number of States Parties at the date of adoption of the amendment. Thereafter, the amendment shall enter into force for any State Party on the thirtieth day following the deposit of its own instrument of acceptance. An amendment shall be binding only on those States Parties which have accepted it. 3. If so decided by the Conference of States Parties by consensus, an amendment adopted and approved in accordance with paragraph 1 of this article which relates exclusively to articles 34, 38, 39 and 40 shall enter into force for all States Parties on the thirtieth day after the number of instruments of acceptance deposited reaches two thirds of the number of States Parties at the date of adoption of the amendment. Article 48 Denunciation A State Party may denounce the present Convention by written notification to the Secretary-General of the United Nations. The denunciation shall become effective one year after the date of receipt of the notification by the SecretaryGeneral. Article 49 Accessible format The text of the present Convention shall be made available in accessible formats. Article 50 Authentic texts The Arabic, Chinese, English, French, Russian and Spanish texts of the present Convention shall be equally authentic. IN WITNESS THEREOF the undersigned plenipotentiaries, being duly authorized thereto by their respective Governments, have signed the present Convention. Annex II Optional Protocol to the Convention on the Rights of Persons with Disabilities The States Parties to the present Protocol have agreed as follows: Article 1 1. A State Party to the present Protocol (“State Party”) recognizes the competence of the Committee on the Rights of Persons with Disabilities (“the Committee”) to receive and consider communications from or on behalf of individuals or groups of individuals subject to its jurisdiction who claim to be victims of a violation by that State Party of the provisions of the Convention. 2. No communication shall be received by the Committee if it concerns a State Party to the Convention that is not a party to the present Protocol. 25