@misc{indiciae39db9a8540fd,
  title = {The stress state near Spanish Peaks, colorado determined from a dike pattern},
  author = {O.H. Muller and D. D. Pollard},
  year = {1977},
  doi = {10.1007/bf01637098},
  url = {https://pubs.usgs.gov/publication/70001085},
  note = {Source identifier: 70001085}
}