@misc{indiciaecb281dca0659,
  title = {Trace-element variations at Summer Coon volcano, San Juan Mountains, Colorado, and the origin of continental-interior andesite},
  author = {Robert A. Zielinski and Peter W. Lipman},
  year = {1976},
  doi = {10.1130/0016-7606(1976)87<1477:tvascv>2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70207630},
  note = {Source identifier: 70207630}
}