1. ABB control systems. http://www.directindustry.es/prod/abb-control-systems/interfaces-hombre-maquina-30259-149900.html
2. ANSI/ISA-18.2:2009 Management of Alarm Systems for the Process Industries (2009)
3. ASM consortium guidelines. Effective operator display design. Abnormal Situation Management. https://www.asmconsortium.net/Documents/2009%20ASM%20Displays%20GL%20Webinar%20v014.pdf . Accessed March 12 2015
4. Bertin, J.: Semiology of Graphics: Diagrams, Networks, Maps. The University of Wisconsin Press, Ltd., Madison, WI (1983)
5. Card Sorting. http://www.usability.gov/how-to-and-tools/methods/card-sorting.html