@misc{indiciae977dd28516e1,
  title = {Optimal-adaptive filters for modelling spectral shape, site amplification, and source scaling},
  author = {Erdal Safak},
  year = {1989},
  doi = {10.1016/s0267-7261(89)80015-6},
  url = {https://pubs.usgs.gov/publication/70015521},
  note = {Source identifier: 70015521}
}