Liu, L., Z. Zhang, H. Zhao, X. Zhou, and X. Zhou. “Filling the Gap of Utterance-Aware and Speaker-Aware Representation for Multi-Turn Dialogue”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 15, May 2021, pp. 13406-14, https://ojs.aaai.org/index.php/AAAI/article/view/17582.