Feller, A., M. Kuhnert, T. Sprenger, and I. Welpe. “Divided They Tweet: The Network Structure of Political Microbloggers and Discussion Topics”. Proceedings of the International AAAI Conference on Web and Social Media, vol. 5, no. 1, Aug. 2021, pp. 474-7, https://ojs.aaai.org/index.php/ICWSM/article/view/14150.