1. Following signature of this Agreement by Euratom, the Agreement shall be open for ratification by the Republic of Bulgaria, the Republic of Cyprus, the Czech Republic, the Republic of Estonia, the Republic of Hungary, the Republic of Latvia, the Republic of Lithuania, the Republic of Malta, the Republic of Poland, Romania, the Slovak Republic, the Republic of Slovenia, the Swiss Confederation and the Republic of Turkey. To that effect, Euratom shall transmit certified copies of the Agreement to those countries for signature. Euratom may invite other countries to become a party to this Agreement.