@misc{indiciae9ecba5946898,
  title = {Eruptive and noneruptive calderas, northeastern San Juan Mountains, Colorado: Where did the ignimbrites come from?},
  author = {Peter W. Lipman and William C. McIntosh},
  year = {2008},
  doi = {10.1130/b26330.1},
  url = {https://pubs.usgs.gov/publication/70009732},
  note = {Source identifier: 70009732}
}