@inproceedings{887,
  author = {Gautam Biswas and Thomas Katzlberger and John Bransford and Daniel Schwartz},
  title = {Extending intelligent learning environments with teachable agents to enhance learning},
  year = {2001},
  journal = {Artificial Intelligence in Education},
  month = {2001},
  publisher = {IOS Press},
  address = {Amsterdam},
}