@misc{indiciae2f6b5e761985,
  title = {The improved robustness of multigrid elliptic solvers based on multiple semicoarsened grids},
  author = {Naik, Naomi H. and Vanrosendale, John},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19920001130},
  note = {Source identifier: 19920001130}
}