Pang, B., Y. Li, Y. Zhang, G. Peng, J. Tang, K. Zha, J. Li, and C. Lu. “Unsupervised Representation for Semantic Segmentation by Implicit Cycle-Attention Contrastive Learning”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 36, no. 2, June 2022, pp. 2044-52, doi:10.1609/aaai.v36i2.20100.