@article{lrsp-2011-4,
  title    = {Magnetic Structure of Sunspots},
  author   = {Juan M. Borrero and Kiyoshi Ichimoto},
  journal  = {Living Reviews in Solar Physics},
  year     = {2011},
  number   = {4},
  volume   = {8},
  keywords = {Sunspots, Magnetic fields},
  doi      = {10.12942/lrsp-2011-4},
  url      = {http://www.livingreviews.org/lrsp-2011-4}
}
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