@article{Gonzalez:64313,
      author        = "Gonzalez, Elena and Nanos, Emmanouil M. and Seyr, Helene
                       and Valldecabresd, Laura and Yürüsen, Nurseda Y. and
                       Smolka, Ursula and Muskulus, Michael and Melero, Julio J.",
      title         = "{Key Performance Indicators for Wind Farm Operation and
                       Maintenance}",
      year          = "2017",
}