1. Foltz, P.W., Laham, D., & Landauer, T.K., "The Intelligent Essay Assessor: Applications to educational technology," Interactive Multimedia Electronic Journal of Computer-Enhanced Learning, 1, 1999 (02).
2. Liu Runqing, "Research on foreign languages and education in the era of big data," in Contemporary Foreign Languages Research, 2014 (07).
3. He Xuliang, "The credibility and validity of English composition evaluation on Jukuu Pigai system," in Modern Education Technology, 2013 (05).
4. Tang Jinlan and Wu Yi'an, "A Review of research on the application of online English writing system," in Foreign Languages Teaching and Research, 2011 (02).
5. Liu Jianda, "Modern technology and language test: application, influence and development trend," Media in Foreign Language Instruction, 2013 (04): 46--51.