@misc{129596,
  author = {Hui-Min Huang and Elena Messina},
  title = {Autonomy Levels for Unmanned Systems (ALFUS) FrameworkVolume II: Framework Models Initial Version},
  year = {2007},
  month = {2007-12-28},
  publisher = {Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.sp.1011-II-1.0},
  language = {en},
}