@misc{indiciae5f0473cc032d,
  title = {A Nonlinear Multigrid Solver for an Atmospheric General Circulation Model Based on Semi-Implicit Semi-Lagrangian Advection of Potential Vorticity},
  author = {McCormick, S. and Ruge, John W.},
  year = {1998},
  url = {https://ntrs.nasa.gov/citations/19990047904},
  note = {Source identifier: 19990047904}
}