@article{artificialintelligencesystemsappliedto,
  title = {Artificial Intelligence Systems applied to tourism: A Survey},
  author = {Luis Duarte and Jonathan Torres and Vitor Ribeiro and Inês Moreira},
  year = {2020},
  eprint = {2010.14654},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2010.14654v2},
}