Feng, H., C. Wu, G. Chen, W. Zhang, and Y. Ning. “Regularized Training and Tight Certification for Randomized Smoothed Classifier With Provable Robustness”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 34, no. 04, Apr. 2020, pp. 3858-65, doi:10.1609/aaai.v34i04.5798.