@misc{indiciae700424f94c50,
  title = {Zonal multigrid solution of compressible flow problems on unstructured and adaptive meshes},
  author = {Mavriplis, Dimitri J.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890016585},
  note = {Source identifier: 19890016585}
}