1. AAIB Singapore (2009), “Final report: airbus A380-800, registration 9V-SKA, pushback incident in Singapore Changi airport”, (accessed 10 January 2008).
2. Global aviation safety study;Allianz Global Corporate and Specialty,2014
3. Human error identification techniques applied to public technology: predictions compared with observed use;Applied Ergonomics,1996
4. Safety of ground handling,2007
5. Airport ramp safety and crew performance issues,1995