@misc{indiciae9438966334af,
  title = {Petrology of the Crazy Mountains dike swarm and geochronology of associated sills, south-central Montana},
  author = {Edward A. du Bray and Stephen S. Harlan and Anna B. Wilson},
  year = {2006},
  doi = {10.3133/pp1715},
  url = {https://pubs.usgs.gov/publication/pp1715},
  note = {Source identifier: pp1715}
}