@misc{indiciae4d89902ea3be,
  title = {Peak horizontal acceleration and velocity from strong motion records including records from the 1979 Imperial Valley, California, earthquake},
  author = {William B. Joyner and David M. Boore and Ronald L. Porcella},
  year = {1981},
  doi = {10.3133/ofr81365},
  url = {https://pubs.usgs.gov/publication/ofr81365},
  note = {Source identifier: ofr81365}
}