1. Treasure, J.: Sound Business – How to Use Sound to Grow Profits and Brand Value, 2nd edn. Management Books 2000 Ltd., Gloucestershire (2011). ISBN 9781852526689
2. Harrison, M.F.: Calculation speech intelligibility for the design of public address system at railway stations. Proc. Inst. Mech. Eng. Part F 215, 319–329 (2001)
3. Trafikverket: Handledning AKJ – Stationsmiljö. DokumentID: Stationsmiljö, Trafikverket, Created by Andersson Göran, Efas (2016)
4. Osvalder, A.-L., Ulfvengren, P.: Work and technology on human terms. In: Chapter 7 – Human-Technology Systems, pp. 354–436 (2015). ISBN 978-91-7365-195-0
5. Hekkert, P.: Design aesthetics: principles of pleasure in design. Psychol. Sci. 48(2), 157–172 (2006)