@misc{indiciae0c4968b53fff,
  title = {Detection of SH-type seismic shear waves by means of angular accelerometers},
  author = {J.H. Whitcomb},
  year = {1969},
  doi = {10.3133/pp599d},
  url = {https://pubs.usgs.gov/publication/pp599D},
  note = {Source identifier: pp599D}
}