@misc{indiciae32bbf1af622d,
  title = {A fast multigrid algorithm for energy minimization under planar density constraints.},
  author = {Ron, D and Safro, I and Brandt, A},
  year = {2010},
  doi = {10.1137/090771995},
  url = {https://www.osti.gov/biblio/993687},
  note = {Source identifier: 993687}
}