Yang, X., Liu, W., Bailey, J., Tao, D., & Liu, W. (2021). Bigram and Unigram Based Text Attack via Adaptive Monotonic Heuristic Search. Proceedings of the AAAI Conference on Artificial Intelligence, 35(1), 706-714. Retrieved from https://ojs.aaai.org/index.php/AAAI/article/view/16151