The following publications are possibly variants of this publication:
- AutoTutor: Incorporating Back-Channel Feedback and Other Human-Like Conversational Behaviors into an Intelligent Tutoring SystemSonya Rajan, Scotty D. Craig, Barry Gholson, Natalie K. Person, Arthur C. Graesser, The Tutoring Research Group. ijst, 4(2):117-126, 2001. [doi]
- GnuTutor: An Open Source Intelligent Tutoring System Based on AutoTutorAndrew McGregor Olney. aaaifs 2009: [doi]
- Intelligent Tutoring Systems with Conversational DialogueArthur C. Graesser, Kurt VanLehn, Carolyn Penstein Rosé, Pamela W. Jordan, Derek Harter. aim, 22(4):39-52, 2001.
- AutoTutor 2013: Conversation-Based Online Intelligent Tutoring System with Rich Media (Interactive Event)Qinyu Cheng, Keli Cheng, Haiying Li, Zhiqiang Cai, Xiangen Hu, Arthur C. Graesser. aied 2013: 930-931 [doi]