@misc{indiciaef2a11a4521d0,
  title = {A diagonally inverted LU implicit multigrid scheme},
  author = {Yokota, J. W. and Caughey, D. A. and Chima, R. V.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19880061564},
  note = {Source identifier: 19880061564}
}