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1.In order to invoke the provisions of Article 18 of the Regulation, an employed or self-employed person shall submit to the competent institution a certified statement specifying the periods of insurance completed under the legislation to which he was last subject.
2.This certified statement shall be issued at the request of the employed or self-employed person by the institution or institutions of the Member State to whose legislation he was last subject. If he does not submit the said certified statement, the competent institution shall obtain it from the institution or institutions concerned.
3.The provisions of paragraph 1 and 2 shall apply by analogy if it is necessary to take into account periods of insurance previously completed under the legislation of any other Member State in order to satisfy the conditions of the legislation of the competent State.