Lowering the Bar for Creating Model-Tracing Intelligent Tutoring Systems. - Stephen Blessing; Stephen B. Gilbert; Steven Ourada; Steven Ritter 001 (AIED, 2007)

Authoring Model-Tracing Cognitive Tutors. - Stephen Blessing; Stephen B. Gilbert; Steven Ourada; Steven Ritter 001 (Int. J. Artif. Intell. Educ., 2009)