Tian, Jialin, et al. “TVT: Three-Way Vision Transformer through Multi-Modal Hypersphere Learning for Zero-Shot Sketch-Based Image Retrieval”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 36, no. 2, June 2022, pp. 2370-8, doi:10.1609/aaai.v36i2.20136.