@misc{indiciaeddf7cafb4b28,
  title = {Amplitude loss of sonic waveform due to source coupling to the medium},
  author = {Myung W. Lee and William F. Waite},
  year = {2007},
  doi = {10.1029/2006gl029015},
  url = {https://pubs.usgs.gov/publication/70030894},
  note = {Source identifier: 70030894}
}