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1. The provisions of this Convention shall be applicable:
(a) to persons who are or have been subject to the legislation of one or more of the Contracting Parties and are nationals of a Contracting Party, or are refugees or stateless persons resident in the territory of a Contracting Party, as well as to the members of their families and their survivors;
(b) to the survivors of persons who were subject to the legislation of one or more of the Contracting Parties, irrespective of the nationality of such persons, where these survivors are nationals of a Contracting Party, or refugees or stateless persons resident in the territory of a Contracting Party;
(c) without prejudice to Article 2, paragraph 4, to civil servants and persons treated as such under the legislation of the Contracting Party concerned, in so far as they are subject to any legislation of that Contracting Party to which this Convention applies.
2. Notwithstanding the provisions of sub-paragraph (c) of the preceding paragraph, the categories of persons - other than members of the service staff of diplomatic missions or consular posts and persons employed in the private service of officials of such missions or posts - in respect of whom the Vienna Convention on Diplomatic Relations and the Vienna Convention on Consular Relations provide for exemption from the social security provisions which are in force in the receiving State, shall not benefit from the provisions of this Convention.