Keller, F., Schoch, D., Stier, S. and Yang, J. 2017. How to Manipulate Social Media: Analyzing Political Astroturfing Using Ground Truth Data from South Korea. Proceedings of the International AAAI Conference on Web and Social Media. 11, 1 (May 2017), 564-567. DOI:https://doi.org/10.1609/icwsm.v11i1.14941.