Artikel XI.1

1. This Convention shall be open for signature by:
a) the member States of the Council of Europe;
b) the member States of the UNESCO Europe Region;
c) any other signatory, contracting State or party to the European Cultural Convention of the Council of Europe and/or to the UNESCO Convention on the Recognition of Studies, Diplomas and Degrees concerning Higher Education in the States belonging to the Europe Region, which have been invited to the Diplomatic Conference entrusted with the adoption of this Convention.
2. These States and the Holy See may express their consent to be bound by:
a) signature without reservation as to ratification, acceptance or approval; or
b) signature, subject to ratification, acceptance or approval, followed by ratification, acceptance or approval; or
c) accession.
3. Signatures shall be made with one of the depositaries. Instruments of ratification, acceptance, approval or accession shall be deposited with one of the depositaries.