1. On a proper construction of the expression "place where the harmful event occurred" in Article 5(3) of the Convention of 27 September 1968 on Jurisdiction and the Enforcement of Judgments in Civil and Commercial Matters, as amended by the Convention of 9 October 1978 on the accession of the Kingdom of Denmark, Ireland and the United Kingdom of Great Britain and Northern Ireland and by the Convention of 25 October 1982 on the accession of the Hellenic Republic, the victim of a libel by a newspaper article distributed in several Contracting States may bring an action for damages against the publisher either before the courts of the Contracting State of the place where the publisher of the defamatory publication is established, which have jurisdiction to award damages for all the harm caused by the defamation, or before the courts of each Contracting State in which the publication was distributed and where the victim claims to have suffered injury to his reputation, which have jurisdiction to rule solely in respect of the harm caused in the State of the court seised.

2. The criteria for assessing whether the event in question is harmful and the evidence required of the existence and extent of the harm alleged by the victim of the defamation are not governed by the Convention but by the substantive law determined by the national conflict of laws rules of the court seised, provided that the effectiveness of the Convention is not thereby impaired.