Depending on the discipline, the impact and prestige of the publication channels in the international scientific community can be estimated using the impact factors and level rating indicators that the secretariat Secretariat provides for the use of panels. The citation databases cover better covers the natural and medical sciences better than the journals/series of engineering, social sciences and the humanities. In case of SSH, the focus of citation databases in English newspaper articles is also problematic. The Norwegian and Danish panel ratings create a more comprehensive basis for evaluating the international prestige of journals and series. None of the indicators, however, covers all publishing channels to be evaluated in the Publish Publication Forum.