@misc{indiciae01eb20d7d72f,
  title = {Crystal calibration of the large aperture seismic array (LASA), Montana},
  author = {David H. Warren and J. H. Healy and Joyce Bohn and P.A. Marshall},
  year = {1972},
  doi = {10.3133/ofr72444},
  url = {https://pubs.usgs.gov/publication/ofr72444},
  note = {Source identifier: ofr72444}
}