@misc{indiciaef1c4c3ea3181,
  title = {Frequency spectral analysis of GPR data over a crude oil spill},
  author = {B.L. Burton and G.R. Olhoeft and M.H. Powers},
  year = {2004},
  url = {https://pubs.usgs.gov/publication/70026439},
  note = {Source identifier: 70026439}
}