@misc{indiciaedc167d07bb3f,
  title = {Measurements of slope distances and zenith angles at Newberry and South Sister volcanoes, Oregon, 1985-1986},
  author = {E.Y. Iwatsubo and Lyn J. Topinka and Donald A. Swanson},
  year = {1988},
  doi = {10.3133/ofr88377},
  url = {https://pubs.usgs.gov/publication/ofr88377},
  note = {Source identifier: ofr88377}
}