@misc{indiciaebd2315f930fe,
  title = {A Study of Multigrid Preconditioners Using Eigensystem Analysis},
  author = {Roberts, Thomas W. and Swanson, R. C.},
  year = {2005},
  url = {https://ntrs.nasa.gov/citations/20050217481},
  note = {Source identifier: 20050217481}
}