@inproceedings{backtrainingexcelsselftrainingat,
  title = {Back-Training excels Self-Training at Unsupervised Domain Adaptation of Question Generation and Passage Retrieval},
  author = {Devang Kulshreshtha and Robert Belfer and Iulian Vlad Serban and Siva Reddy},
  year = {2021},
  booktitle = {EMNLP 2021 11},
  eprint = {2104.08801},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2104.08801v2},
}