@misc{indiciae109d7ad6e55e,
  title = {Multi-Spacecraft Observations of Interplanetary Shocks},
  author = {Szabo, A. and Smith, C. W. and Tokar, R. L. and Skoug, R. M.},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/19990079403},
  note = {Source identifier: 19990079403}
}