1. Managing major accident risk: concerns about complacency and complexity in practice;Årstad;Saf. Sci.,2016
2. Ackoff, R.L., 1999. Ackoff's Best: His Classic Writings on Management. ISBN 0-471-31634-2. Kindle Edition. (Referring to Ackoff, Russell, L. and F. E. Emery. On Purposeful Systems. Aldine-Atherton, Chicago, 1972.)
3. The risk concept – historical and recent development trends;Aven;Reliab. Eng. Syst. Saf.,2012
4. Aven, T., 2011. Misconceptions of Risk. John Wiley & Sons. ISBN: 978-0-470-68388-0. Kindle Edition.
5. Risk Management and Governance, Concepts, Guidelines and Applications;Aven,2010