1. US EPA (2019, May 02). Risk Assessment, Available online: https://www.epa.gov/risk.
2. Renn, O. (September, January 27). The Importance of IRGC Framework. Proceedings of the International Disaster Reduction Conference, Davos, Switzerland.
3. Renn, O. (2008). Risk Governance: Coping with Uncertainty in a Complex World, Earthscan.
4. Risk Assessment;Petts;Handbook of Environmental Impact Assessment,1999
5. Wathern, P. (1995). Environmental Impact Assessment: Theory and Practice, Routledge.