1. Abowd, G.D., Dey, A.K., Brown, P.J., Davies, N., Smith, M., Steggles, P.: Towards a better understanding of context and context-awareness. In: Gellersen, H.W. (ed.) Handheld and Ubiquitous Computing. Lecture Notes in Computer Science, vol. 1707, pp. 304–307. Springer, Berlin (1999)
2. Ahmed, A., Zhang, N.: Towards the realisation of context-risk-aware access control in pervasive computing. Telecommun. Syst. 45(2–3), 127–137 (2010)
3. Al-Muhtadi, J., Ranganathan, A., Campbell, R., Mickunas, M.D.: Cerberus: a context-aware security scheme for smart spaces. In: Proceedings of the IEEE International Conference on Pervasive Computing and Communications, PerCom ’03, pp. 489–496. IEEE Computer Society (2003)
4. Bai, G., Gu, L., Feng, T., Guo, Y., Chen, X.: Context-aware usage control for android. In: Jajodia, S., Zhou, J. (eds.) Security and Privacy in Communication Networks, Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol. 50, pp. 326–343. Springer, Berlin (2010)
5. Baldauf, M., Dustdar, S., Rosenberg, F.: A survey on context-aware systems. Int. J. Ad Hoc Ubiquitous Comput. 2(4), 263–277 (2007)