@misc{indiciae6d604134ea4e,
  title = {Active seismic experiment},
  author = {Kovach, R. L. and Watkins, J. S. and Talwani, P.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730013015},
  note = {Source identifier: 19730013015}
}