@misc{indiciaea01b8cb6cf8f,
  title = {Data and methods of a 1999-2000 street sweeping study on an urban freeway in Milwaukee County, Wisconsin},
  author = {Robert J. Waschbusch},
  year = {2003},
  doi = {10.3133/ofr0393},
  url = {https://pubs.usgs.gov/publication/ofr0393},
  note = {Source identifier: ofr0393}
}