@misc{indiciaefd40107a5759,
  title = {Trend analysis of weekly acid rain data, 1978-83},
  author = {Terry L. Schertz and Robert M. Hirsch},
  year = {1985},
  doi = {10.3133/wri854211},
  url = {https://pubs.usgs.gov/publication/wri854211},
  note = {Source identifier: wri854211}
}