exts shall be signed and shall be equally
authoritative.

2. Official texts of this Convention shall be established by the
Director-General, after consultation with the governments concerned, in
Arabic, German, Italian, and Portuguese.

3. Any Contracting State or group of Contracting States shall be
entitled to have established by the Director-General other texts in the
language of its choice by arrangement with the Director-General.

4. All such texts shall be annexed to the signed texts of this
Convention.

ARTICLE XVII

1. This Convention shall not in any way affect the provisions of the
Berne Convention for the Protection of Literary and Artistic Works or
membership in the Union created by that Convention.

2. In application of the foregoing paragraph, a declaration has been
annexed to the present Article. This declaration is an integral part
of this Convention for the States bound by the Berne Convention on 1
January 1951, or which have or may become bound to it at a later date.
The signature of this Convention by such States shall also constitute
signature of the said declaration, and ratification, acceptance or
accession by such States shall include the declaration, as well as this
Convention.

ARTICLE XVIII

This Convention shall not abrogate multilateral or bilateral copyright
conventions or arrangements that are or may be in effect exclusively
between two or more American Republics. In the event of any difference
either between the provisions of such existing conventions or
arrangements and the provisions of this Convention, or between the
provisions of this Convention and those of any new convention or
arrangement which may be formulated between two or more American
Republics after this Convention comes into force, the convention or
arrangement most recently formulated shall prevail between the parties
thereto. Rights in works acquired in any Contracting State under
existing conventions or arrangements before the date this Convention
comes into force in such State shall not be affected.

ARTICLE XIX

This Convention shall not abrogate multilateral or bilateral
conventions or arrangements in effect between two or more Contracting
States. In the event of any difference between the provisions of such
existing conventions or arrangements and the provisions of this
Convention, the provisions of this Convention shall prevail. Rights in
works acquired in any Contracting State under existing con