@article{Physics.2.13,
  title = {Double or nothing for spin filters},
  author = {De Teresa, Jos\'e Mar\'\ia},
  journal = {Physics},
  volume = {2},
  issue = {},
  pages = {13},
  numpages = {1},
  year = {2009},
  month = {Feb},
  doi = {10.1103/Physics.2.13},
  url = {http://link.aps.org/doi/10.1103/Physics.2.13},
  publisher = {American Physical Society}
}