Sandra Katz, Patricia L. Albacete, Michael Ford, Pamela W. Jordan, Michael Lipschultz, Diane J. Litman, Scott Silliman, Christine Wilson. Pilot Test of a Natural-Language Tutoring System for Physics That Simulates the Highly Interactive Nature of Human Tutoring. In H. Chad Lane, Kalina Yacef, Jack Mostow, Philip I. Pavlik, editors, Artificial Intelligence in Education - 16th International Conference, AIED 2013, Memphis, TN, USA, July 9-13, 2013. Proceedings. Volume 7926 of Lecture Notes in Computer Science, pages 636-639, Springer, 2013. [doi]