@misc{indiciaeff611e4539d3,
  title = {Comment on “Apatite 4He/3He and (U-Th)/He Evidence for an Ancient Grand Canyon”},
  author = {Karl E. Karlstrom and John P. Lee and Shari A. Kelley and Ryan S. Crow and Richard A. Young and Ivo Lucchitta and L. Sue Beard and Rebecca Dorsey and Jason Ricketts and William R. Dickinson and Laura Crossey},
  year = {2013},
  doi = {10.1126/science.1233982},
  url = {https://pubs.usgs.gov/publication/70193248},
  note = {Source identifier: 70193248}
}