Artikel IVbis

1. The rights referred to in Article I shall include the basic rights ensuring the author's economic interests, including the exclusive right to authorize reproduction by any means, public performance and broadcasting. The provisions of this Article shall extend to works protected under this Convention either in their original form or in any form recognizably derived from the original.
2. However, any Contracting State may, by its domestic legislation, make exceptions that do not conflict with the spirit and provisions of this Convention, to the rights mentioned in paragraph 1 of this Article. Any State whose legislation so provides, shall nevertheless accord a reasonable degree of effective protection to each of the rights to which exception has been made.