Liu, P., J. Fu, Y. Dong, X. Qiu, and J. C. Kit Cheung. “Learning Multi-Task Communication With Message Passing for Sequence Learning”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 33, no. 01, July 2019, pp. 4360-7, doi:10.1609/aaai.v33i01.33014360.