@article{conversationalquestionansweringon,
  title = {Conversational Question Answering on Heterogeneous Sources},
  author = {Philipp Christmann and Rishiraj Saha Roy and Gerhard Weikum},
  year = {2022},
  eprint = {2204.11677},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2204.11677v2},
}