@misc{indiciaef36830016daf,
  title = {Frequency-dependent Lg Q within the continental United States},
  author = {D. Erickson and D.E. McNamara and H.M. Benz},
  year = {2004},
  doi = {10.1785/012003218},
  url = {https://pubs.usgs.gov/publication/70026590},
  note = {Source identifier: 70026590}
}