RMT: A Dialog-Based Research Methods Tutor With or Without a Head. - Peter M. Wiemer-Hastings; David Allbritton; Elizabeth Arnott (Intelligent Tutoring Systems, 2004)

Squeezing Out Gaming Behavior in a Dialog-Based ITS. - Peter M. Hastings; Elizabeth Arnott-Hill; David Allbritton (Intelligent Tutoring Systems (1), 2010)