@article{elliottkaystyles2004,
  title = "Finite Element Approximation of a Variational Inequality Formulation of Bean's Model for Superconductivity",
  author = "C. M. Elliott and D. Kay and V. Styles",
  year = "2004",
  journal = "SIAM J. Num. Anal.",
  number = "3",
  pages = "1324--1341",
  volume = "42",
  doi = "10.1137/S0036142902412324",
}