An, J., H. Kwak, O. Posegga, and A. Jungherr. “Political Discussions in Homogeneous and Cross-Cutting Communication Spaces”. Proceedings of the International AAAI Conference on Web and Social Media, Vol. 13, no. 01, July 2019, pp. 68-79, https://www.aaai.org/ojs/index.php/ICWSM/article/view/3210.