@misc{vall2018machine,
  title={Machine Learning Approaches to Hybrid Music Recommender Systems},
  author={Andreu Vall and Gerhard Widmer},
  year={2018},
  eprint={1807.05858},
  archivePrefix={arXiv},
  primaryClass={cs.IR},
  url={https://arxiv.org/abs/1807.05858}
}