University of Cologne 

The paper refers to the presentation which was held by PD Simon Hegelich (managing director of the Research Course of lectures Siegen, ger.: ForschungsKollegSiegen, FoKoS) at the conference organised by Institute for Broadcasting Economics and Institute for Media Law about "Media Bias in the Internet - impartiality and variety of media (content)” on 19th June 2015 in Cologne.

More about this paper here, the full text you can order here.