@article{Shi:2018Bh,
  author = "Shi, Yijin  and  Jia, Zhiyang",
  title = "{A Constraint-based Tourist Attraction Recommender System}",
  doi = "10.22323/1.300.0017",
  journal = "PoS",
  year = 2018,
  volume = "ISCC 2017",
  pages = "017"
}