@article{PB-FFC3D24577226D3E1C8B,
  title = {CRISP Spectropolarimetric Imaging of Penumbral Fine Structure},
  author = {G. B. Scharmer and G. Narayan and T. Hillberg and J. de la Cruz Rodriguez and M. G. Löfdahl and D. Kiselman and P. Sütterlin and M. van Noort and A. Lagg},
  journal = {The Astrophysical Journal},
  year = {2008},
  doi = {10.1086/595744}
}