@misc{puelz2015optimal,
  title={Optimal ETF Selection for Passive Investing},
  author={David Puelz and Carlos M. Carvalho and P. Richard Hahn},
  year={2015},
  eprint={1510.03385},
  archivePrefix={arXiv},
  primaryClass={q-fin.ST},
  url={https://arxiv.org/abs/1510.03385}
}