@misc{indiciaef8277cdbbfa3,
  title = {Ocean trenches; a computer animation and paper model},
  author = {T. R. Alpha and J. P. Galloway},
  year = {1996},
  doi = {10.3133/ofr9676b},
  url = {https://pubs.usgs.gov/publication/ofr9676B},
  note = {Source identifier: ofr9676B}
}