1. [1] M. B. Houston, L. A. Bettencourt and S. Wenger: The relationship between waiting in a service queue and evaluations of service quality: A field theory perspective, Psychology & Marketing, Vol. 15, No. 8, pp. 735-753, 1999.
2. [2] Bluetooth SIG: Specification of the Bluetooth System, Vol. 6, Core System Package [Low Energy Controller Volume], June 30, 2010.
3. [3] Apple: Getting Started with iBeacon, Version 1.0, June 2, 2014. https://developer.apple.com/ibeacon/Getting-Started-with-iBeacon.pdf
4. [4] M. S. Gast: Building Applications with iBeacon: Proximity and Location Services with Bluetooth Low Energy, O'Reilly Media, 2014.
5. [5] Google: Google Beacons. https://developers.google.com/beacons/