@conference{151661,
  author = {Hui-Min Huang and K Pavek and James Albus and Elena Messina},
  title = {Autonomy Levels for Unmanned Systems (ALFUS) Framework: An Update},
  year = {2005},
  month = {2005-04-04},
  publisher = {SPIE Defense and Security Symposium, Orlando, FL},
  language = {en},
}