@article{261,
  author = {Thomas Beale and Anita Layton},
  title = {On the accuracy of finite difference methods for elliptic problems with interfaces},
  year = {2007},
  journal = {Communications in Applied Mathematics and Computational Science},
  volume = {1},
  number = {1},
  pages = {91\textendash119},
  publisher = {Mathematical Sciences Publishers},
}