Lee, J. Y., S. V. Mehta, M. Wick, J.-B. Tristan, and J. Carbonell. “Gradient-Based Inference for Networks With Output Constraints”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 33, no. 01, July 2019, pp. 4147-54, doi:10.1609/aaai.v33i01.33014147.