1. Learning on demand: Online education in the United States;Allen,2010
2. Does training on self-regulated learning facilitate students’ learning with hypermedia;Azevedo;Journal of Educational Psychology,2004
3. Student motivation and social presence in online learning: Implications for future research;Bai,2003
4. Beyond butlers: Intelligent agents as mentors;Baylor;Journal of Educational Computing Research,2000
5. Agent-based learning environments for investigating teaching and learning;Baylor;Journal of Educational Computing Research,2002