@misc{indiciae94756ba1bd95,
  title = {Additional period and site class maps for the 2014 National Seismic Hazard Model for the conterminous United States},
  author = {Allison M. Shumway and Mark D. Petersen and Peter M. Powers and Sanaz Rezaeian},
  year = {2018},
  doi = {10.3133/ofr20181111},
  url = {https://pubs.usgs.gov/publication/ofr20181111},
  note = {Source identifier: ofr20181111}
}