@misc{indiciaee0a9ca72bb5e,
  title = {Recent refinements in calibrating bed-load samplers},
  author = {D. W. Hubbell and H.H. Stevens and J. V. Skinner and J.P. Beverage},
  year = {1981},
  url = {https://pubs.usgs.gov/publication/70170916},
  note = {Source identifier: 70170916}
}