@inproceedings{klenk2006AMFQR, title={Analogical model formulation for AP Physics Problems}, author={Klenk, Matthew and Forbus, Kenneth D}, year={2006}, booktitle={Proceedings of the 20th international workshop on qualitative reasoning}, %venuetype = {Workshop}, url={http://matthewklenk.com/papers/qr06-klenk-forbus-final.pdf} } % Graz, Austria