Wu, Y., Arora, S. S., Wu, Y. and Yang, H. (2021) “Beating Attackers At Their Own Games: Adversarial Example Detection Using Adversarial Gradient Directions”, Proceedings of the AAAI Conference on Artificial Intelligence, 35(4), pp. 2969-2977. doi: 10.1609/aaai.v35i4.16404.