@misc{indiciaecf3e4cfbb9e7,
  title = {Characteristics and use of Helley-Smith type bedload samplers},
  author = {D. W. Hubbell and H.H. Stevens and J. V. Skinner and J.P. Beverage},
  year = {1986},
  doi = {10.3133/ofr86415w},
  url = {https://pubs.usgs.gov/publication/ofr86415W},
  note = {Source identifier: ofr86415W}
}