Leibniz-Institut für Ost- und Südosteuropaforschung is the library in Germany.
According to PR-model, ios-regensburg.de is ranked 32,177th in multilingual Wikipedia, in particular this website is ranked 5,287th in German Wikipedia.
The website is placed before vorwaerts.de and after colombia-sa.com in the BestRef global ranking of the most important sources of Wikipedia.