@article{unifiedprinciplesformultisourcetransfer,
  title = {Unified Principles For Multi-Source Transfer Learning Under Label Shifts},
  author = {Changjian Shui and Zijian Li and Jiaqi Li and Christian Gagné and Charles Ling and Boyu Wang},
  year = {2021},
  url = {https://openreview.net/forum?id=E6fb6ehhLh8},
}