@misc{indiciaec94b45d505a3,
  title = {Improved finite-difference schemes for transonic potential flow calculations},
  author = {Hafez, M. and Whitlow, W., Jr. and Osher, S.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19880032007},
  note = {Source identifier: 19880032007}
}