@article{asurveyoncomplexknowledgebasequestion,
  title = {A Survey on Complex Knowledge Base Question Answering: Methods, Challenges and Solutions},
  author = {Yunshi Lan and Gaole He and Jinhao Jiang and Jing Jiang and Wayne Xin Zhao and Ji-Rong Wen},
  year = {2021},
  eprint = {2105.11644},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2105.11644v1},
}