A Curriculum Planning Model for an Intelligent Tutoring System. - Byung-In Cho; Joel A. Michael; Allen A. Rovick; Martha W. Evens (FLAIRS, 1999)

An Analysis of Multiple Tutoring Protocols. - Byung-In Cho; Joel A. Michael; Allen A. Rovick; Martha W. Evens (Intelligent Tutoring Systems, 2000)