@article{buenoorovio2012,
  title = "Continuous adjoint approach for the spalart-allmaras model in aerodynamic optimization",
  author = "Bueno-Orovio, A. and Castro, C. and Palacios, F. and Zuazua, E.",
  year = "2012",
  journal = "AIAA Journal",
  number = "3",
  pages = "631-646",
  volume = "50",
}