@article{MatT11,
  author = {M. Matthes and C. Tischendorf},
  title = {Convergence analysis of a partial differential algebraic system from
	coupling a semiconductor model to a circuit model},
  journal = {Appl. Numer. Math.},
  year = {2011},
  volume = {61},
  pages = {382--394},
  number = {3},
  doi = {10.1016/j.apnum.2010.11.003}
}