@misc{roe2016density,
  title={Density vs distance for the DUNE beam from two recent geology density maps},
  author={Byron P. Roe},
  year={2016},
  eprint={1608.03802},
  archivePrefix={arXiv},
  primaryClass={physics.geo-ph},
  doi={10.1103/PhysRevD.95.113004},
  url={https://arxiv.org/abs/1608.03802}
}