1. Alexander, I., & Beus-Dukic, L. (2009). Discovering requirements: How to specify products and services. Chichester: Wiley.
2. Barab, S., & Squire, K. (2004). Design-based research: Putting a stake in the ground. Journal of the Learning Sciences, 13(1), 1–14.
3. Brown, A. L. (1992). Design experiments: Theoretical and methodological challenges. Creating Complex Interventions in Classroom Settings of the Learning Sciences, 2(2), 141–178.
4. Brown, A., & Green, T. (2016). Issues and trends in instructional technology: Increased use of Mobile technologies and digital content to provide untethered access to training and learning opportunities. Educational media and technology yearbook, 15–26.
https://doi.org/10.1007/978-3-319-45001-8_2
.
5. Cheng, H. C., & Liao, W. W. (2012). Establishing a lifelong learning environment using IOT and learning analytics. In Advanced Communication Technology (ICACT), 2012 14th international conference on, pp. 1178–1183. IEEE.