Dvořák, W., Ulbricht, M., & Woltran, S. (2021). Recursion in Abstract Argumentation is Hard --- On the Complexity of Semantics Based on Weak Admissibility. Proceedings of the AAAI Conference on Artificial Intelligence, 35(7), 6288-6295. https://doi.org/10.1609/aaai.v35i7.16781