@misc{indiciaee8c7f3b56602,
  title = {Mapping topographic form by digital image-processing in the San Jose 1:100,000 sheet, California},
  author = {Richard J. Pike and William Acevedo and P. K. Showalter},
  year = {1992},
  doi = {10.3133/ofr92420},
  url = {https://pubs.usgs.gov/publication/ofr92420},
  note = {Source identifier: ofr92420}
}