@misc{indiciaed09cae638cf5,
  title = {An enhanced version of an implicit code for the Euler equations},
  author = {Pulliam, T. H. and Jespersen, D. C. and Childs, R. E.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19830035451},
  note = {Source identifier: 19830035451}
}