@misc{indiciae97e0a3ec8a03,
  title = {Shock pair observation},
  author = {Chao, J. K. and Formisano, V. and Hedgecock, P. C.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730002070},
  note = {Source identifier: 19730002070}
}