@misc{indiciae74ca64af9bd6,
  title = {Effect of causal and acausal filters on elastic and inelastic response spectra},
  author = {D.M. Boore and Sinan Akkar},
  year = {2003},
  doi = {10.1002/eqe.299},
  url = {https://pubs.usgs.gov/publication/70025205},
  note = {Source identifier: 70025205}
}