Kurt VanLehn, Brett van de Sande, Robert Shelby, Sophia Gershman. The Andes Physics Tutoring System: An Experiment in Freedom. In Roger Nkambou, Jacqueline Bourdeau, Riichiro Mizoguchi, editors, Advances in Intelligent Tutoring Systems. Volume 308 of pages 421-443, 2010. [doi]
@incollection{VanLehnSSG10,
title = {The Andes Physics Tutoring System: An Experiment in Freedom},
author = {Kurt VanLehn and Brett van de Sande and Robert Shelby and Sophia Gershman},
year = {2010},
doi = {10.1007/978-3-642-14363-2_21},
url = {http://dx.doi.org/10.1007/978-3-642-14363-2_21},
researchr = {https://researchr.org/publication/VanLehnSSG10},
cites = {0},
citedby = {0},
pages = {421-443},
booktitle = {Advances in Intelligent Tutoring Systems},
editor = {Roger Nkambou and Jacqueline Bourdeau and Riichiro Mizoguchi},
volume = {308},
isbn = {978-3-642-14362-5},
}