Sun, K., R. Zhang, Y. Mao, S. Mensah, and X. Liu. “Relation Extraction With Convolutional Network over Learnable Syntax-Transport Graph”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 34, no. 05, Apr. 2020, pp. 8928-35, doi:10.1609/aaai.v34i05.6423.