Kovic, Marko, Adrian Rauchfleisch, Marc Sele, and Christian Caspar. “Digital Astroturfing in Politics: Definition, Typology, and Countermeasures”. Studies in Communication Sciences 18, no. 1 (2018): 69–85. Accessed April 19, 2024. https://www.hope.uzh.ch/scoms/article/view/j.scoms.2018.01.005.