@InProceedings{grady2005:geometric,
  author =	 {Leo Grady and Tolga Tasdizen},
  title =	 {A Geometric Multigrid Approach to Solving the {2D}
                  Inhomogeneous {L}aplace Equation with Internal
                  Boundary Conditions},
  booktitle =	 {Proceedings of ICIP 2005},
  pages =	 {642--645},
  year =	 2005,
  volume =	 2,
  month =	 {Oct.},
  publisher =	 {IEEE}
}