Myroslava Dzikovska Gwendolyn E. Campbell Charles B. Callaway Natalie B. Steinhauser Elaine Farrow Johanna D. Moore Leslie A. Butler Colin Matheson Diagnosing Natural Language Answers to Support Adaptive Tutoring. 403-408 2008 FLAIRS Conference conf/flairs/2008 db/conf/flairs/flairs2008.html#DzikovskaCCSFMBM08 http://www.aaai.org/Library/FLAIRS/2008/flairs08-097.php