Brian Greaves, Marijke Coetzee, Wai Sze Leung. Access Control Requirements for Physical Spaces Protected by Virtual Perimeters. In Steven Furnell, Haralambos Mouratidis, Günther Pernul, editors, Trust, Privacy and Security in Digital Business - 15th International Conference, TrustBus 2018, Regensburg, Germany, September 5-6, 2018, Proceedings. Volume 11033 of Lecture Notes in Computer Science, pages 182-197, Springer, 2018. [doi]