@misc{indiciaeb252cef48d68,
  title = {A Visual Basic program to classify sediments based on gravel-sand-silt-clay ratios},
  author = {L. J. Poppe and A.H. Eliason and M. E. Hastings},
  year = {2003},
  doi = {10.1016/s0098-3004(03)00048-7},
  url = {https://pubs.usgs.gov/publication/70025781},
  note = {Source identifier: 70025781}
}