@misc{indiciae2a280c5fa9c9,
  title = {Preconditioning Operators on Unstructured Grids},
  author = {Nepomnyaschikh, S. V.},
  year = {1996},
  url = {https://ntrs.nasa.gov/citations/19970006609},
  note = {Source identifier: 19970006609}
}