"Global Diversity in Search Results: A Socio-Technical Examination of Google, Baidu, and Yandex’ Geopolitical Search Query Results in the US, Western EU, India, China, and Russia", lecture by C. Puschmann at the 7th European Communication Conference (ECC) of the European Communication Research and Education Association (ECREA) on 2 November 2018 in Lugano (together with L. Slechten, J. Zeng, M. Wijermars, J. Kulshrestha and C. Courtois.).