@article{machinelearningapproachestohybridmusic,
  title = {Machine Learning Approaches to Hybrid Music Recommender Systems},
  author = {Vall Andreu and Widmer Gerhard},
  year = {2018},
  eprint = {1807.05858},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1807.05858v1},
}