@conference {4294,
	title = {Extending intelligent learning environments with teachable agents to enhance learning},
	booktitle = {Artificial Intelligence in Education},
	year = {2001},
	month = {2001},
	publisher = {IOS Press},
	organization = {IOS Press},
	address = {Amsterdam},
	author = {Biswas, Gautam and Katzlberger, Thomas and Bransford, John and Schwartz, Daniel}
}
