@misc{indiciaeedd0f70025d1,
  title = {SPIKE; a program to plot three-dimensional data},
  author = {C.A. Carlson},
  year = {1984},
  doi = {10.3133/ofr85105},
  url = {https://pubs.usgs.gov/publication/ofr85105},
  note = {Source identifier: ofr85105}
}