1. Aguiar, E., Chawla, N.V., Brockman, J., Ambrose, G. A., Goodrich, V.: Engagement vs performance: using electronic portfolios to predict first semester engineering student retention. In: Proceedings LAK 2014, pp. 103–112 (2014)
2. Buzzetto-More, N.A., Alade, A.J.: Best practices in e-assessment. J. Inf. Technol. Educ. 5(1), 251–269 (2006)
3. Cooper, T.: Portfolio Assessment: A Guide for Lecturers, Teachers, and Course Designers. Praxis Education, Perth (1999)
4. Feinberg, J.: Wordle. http://www.wordle.net . Accessed 28 Aug 2016
5. Foltz, P.W., Laham, D., Landauer, T.K.: Automated Essay Scoring: Applications to Educational Technology. In: Proceedings of EdMedia 1999 (1999)