Tang, Shixiang, Peng Su, Dapeng Chen, and Wanli Ouyang. 2021. “Gradient Regularized Contrastive Learning for Continual Domain Adaptation”. Proceedings of the AAAI Conference on Artificial Intelligence 35 (3):2665-73. https://ojs.aaai.org/index.php/AAAI/article/view/16370.