- GHTC, page 377-382. IEEE, (2011)
- AMCIS, page 488. Association for Information Systems, (2010)
- AAAI/IAAI, page 860-867. AAAI Press / The MIT Press, (1998)
- AAAI/IAAI, page 358-365. AAAI Press / The MIT Press, (1999)
- AAAI/IAAI, page 41-47. AAAI Press / The MIT Press, (2002)
- AAAI/IAAI, page 461-467. AAAI Press / The MIT Press, (2002)
- CHI, page 155-162. ACM, (2002)
- CoRR (2005)
- Artif. Intell. Law 19(4):291-331 (2011)
- AIED, volume 158 of Frontiers in Artificial Intelligence and Applications, page 714. IOS Press, (2007)
- IJGCMS 3(3):1-18 (2011)
- IEICE Transactions 87-D(6):1290-1298 (2004)
- MFCS, volume 3153 of Lecture Notes in Computer Science, page 106-118. Springer, (2004)
- Intelligent Tutoring Systems, volume 2363 of Lecture Notes in Computer Science, page 542-551. Springer, (2002)
- ZDM 37(6):490-505 (2005)
- User Modeling, volume 2109 of Lecture Notes in Computer Science, page 64-73. Springer, (2001)
- Graph Drawing, volume 1984 of Lecture Notes in Computer Science, page 31-36. Springer, (2000)
- IDC, page 46-51. ACM, (2011)
- ECI, volume 65 of Lecture Notes in Computer Science, page 402-420. Springer, (1978)
- Commun. ACM 2(9):29-30 (1959)


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