@misc{indiciaea134a565213c,
  title = {Nonlinear filters for efficient shock computation},
  author = {Engquist, Bjorn and Lotstedt, Per and Sjogreen, Bjorn},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890052494},
  note = {Source identifier: 19890052494}
}