@article{Romero15-tgrs,

  author    = {Adriana Romero and

               Carlo Gatta and

               Gustau Camps-Valls},

  title     = {Unsupervised Deep Feature Extraction for Remote Sensing Image Classification},

  journal   = {{IEEE} Transactions on Geoscience and Remote Sensing},

  year      = {2016},

pages     = {1349--1362},

}