@misc{indiciaeee3ec0a43354,
  title = {A diagonal form of an implicit approximate-factorization algorithm},
  author = {Pulliam, T. H. and Chaussee, D. S.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810044959},
  note = {Source identifier: 19810044959}
}