1. AIBN, Accident Investigation Board/Norway, 2005. Safety in Norwegian Aviation during the Process of Change, Lillestrøm, Norway.
2. Baranzini, D., Cromie, S., 2002. Team Systems in Aviation Maintenance: Interaction and Co-ordination Across Work Teams. Department of Psychology-TCD Dublin, Ireland.
3. Safety performance indicators;Dahlgren,2001
4. Global Aviation Information Network (GAIN), 2001. Operator's Flight Safety Handbook (Accessed as http://www.204.108.6.79/products/products_AviationOperator.cfm).
5. Evaluating safety in the management of maintenance activities in the chemical process industry, Netherlands;Hale;Safety Science,1998