The Member States 25 March 1957, Consolidated version of the Treaty establishing the European Atomic Energy Community#TITLE II - Provisions for the encouragement of progress in the field of nuclear energy#CHAPTER 10 - EXTERNAL RELATIONS#Article 105

Article 105 The provisions of this Treaty shall not be invoked so as to prevent the implementation of agreements or contracts concluded before 1 January 1958 or, for acceding States, before the date of their accession, by a Member State, a person or an undertaking with a third State, an international organisation or a national of a third State where such agreements or contracts have been