@misc{indiciae0673aa5902a9,
  title = {APSAS; an Automated Particle Size Analysis System},
  author = {Lawrence J. Poppe and A.H. Eliason and J.J. Fredericks},
  year = {1985},
  doi = {10.3133/cir963},
  url = {https://pubs.usgs.gov/publication/cir963},
  note = {Source identifier: cir963}
}