@article{kay2006multigrid,
  title = "A multigrid finite element solver for the Cahn--Hilliard equation",
  author = "Kay, David and Welford, Richard",
  year = "2006",
  journal = "Journal of Computational Physics",
  number = "1",
  pages = "288--304",
  publisher = "Elsevier",
  volume = "212",
}