T. Sohn, K. Li, W. Griswold, and J. Hollan. Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, page 433-442. New York, NY, USA, ACM, (2008)
D. Stanton, C. O’Malley, K. Ng, M. Fraser, and S. Benford. Designing for change in networked learning environments: proceedings of the International Conference on Computer Support for Collaborative Learning 2003, page 293 – 302. (2003)
B. Vogel, D. Spikol, A. Kurti, and M. Milrad. Proceedings of the 2010 6th IEEE International Conference on Wireless, Mobile, and Ubiquitous Technologies in Education, page 65--72. Washington, DC, USA, IEEE Computer Society, (2010)
A. Herrington, J. Herrington, and J. Mantei. New technologies, new pedagogies: Mobile learning in higher education, Faculty of Education, University of Wollongong, (2009)