@inproceedings{17849,
  author = {Andrew Olney},
  title = {GnuTutor: An Open Source Intelligent Tutoring System Based on AutoTutor},
  year = {2009},
  journal = {Cognitive and Metacognitive Educational Systems: Papers from the AAAI Fall Symposium (FS-09-02)},
  language = {eng},
}