1. Johnson, M., Hollins, P., Wilson, S., Liber, O.: Towards a reference model for the personal learning environment. In: Proceedings of the 23rd annual ascilite conference of the Australasian Society for Computers in Learning in Tertiary Education: Who’s learning? Whose Technology?, pp. 385–390. Sydney University Press, Sydney (2006)
2. Koper, R.: Conditions for effective smart learning environments. Smart Learning Environments 2014 1:5. SpringerOpen (2014)
3. Mikroyannidis, A., Kroop, S., Wolpers, M.: Personal Learning Environments (PLEs): Visions and Concepts. In: Responsive Open Learning Environments, pp. 1–16. Springer International Publishing (2015)
4. Kinshuk, Chen, N-S., Cheng, I-L., Chew, S.W.: Evolution Is not enough: Revolutionizing Current Learning Environments to Smart Learning Environments. International Journal of Artificial Intelligence in Education 26.2, pp. 561–581 (2016)
5. Wild, F., Scott, P., Lefrere, P., Karjalainen, J, Helin, K., Naeve, A., Isaksson, E.: Towards data exchange formats for learning experiences in manufacturing workplaces. In: Proceedings of the 4th Workshop on Awareness and Reflection in Technology-Enhanced Learning (ARTEL’14). CEUR Workshop Proceedings, Vol. 1238 (2014)