1. Bow ties in risk management: A concept book for process safety;American Institute of Chemical Engineers. Center for Chemical Process Safety,2018
2. Hassall, M.E., & Harris, J. (2017). Risk controls knowledge: Determining leading practice from case study analysis (ACARP report C25036). Australia. Retrieved from https://www.acarp.com.au/abstracts.aspx?repId=C25036.
3. Hassall, M.E., Joy, J., Doran, C., & Punch, M. (2015). Selection and optimisation of risk controls (ACARP report C23007). Retrieved from: http://www.acarp.com.au/abstracts.aspx?repId=C23007; Australia.
4. ICMM. (2015). Health and safety critical control management good practice guide. Published by the International Council on Mining and Metals (ICMM), London, UK. Retrieved from https://www.icmm.com/en-gb/publications/health-and-safety/health-and-safety-critical-control-management-good-practice-guide; London, UK.
5. IOGP. (2011). Human factors engineering in projects. Report No. 454. International Association of Oil & Gas Producers (IOGP).