@misc{indiciaec1617002721c,
  title = {Statistics of arrival time residuals in southern California},
  author = {David D. Jackson and Raymond A. Ergas},
  year = {1977},
  doi = {10.3133/7000071},
  url = {https://pubs.usgs.gov/publication/7000071},
  note = {Source identifier: 7000071}
}