@InProceedings{fike_alonso-2011,
  author={{Fike}, J.~A. and {Alonso}, J.~J.},
  title={The Development of Hyper-Dual Numbers for Exact Second-Derivative Calculations},
  booktitle={AIAA paper 2011-886, 49th AIAA Aerospace Sciences Meeting},
  year=2011
}
