1. Alumina Refining information Available at: https://aluminium.org.au/how-aluminium-ismade/alumina-refining-chart/. Accessed 9 July 2020
2. Paul Barringer H (2000) Process reliability and six-sigma, national manufacturing week conference , 13 March 2000 Chicago
3. Nassar K (2005) Using weibull analysis for evaluation of cost and schedule performance. American Society of Civil Engineers published, Journal Construction Engineering and Management
4. Abernethy, Robert B (1998) The New Weibull Handbook, 3rd Edition, Self-published by Dr. Robert B. Abernethy, 536 Oyster Road, North Palm Beach, FL 33408–4328, Phone/FAX: 561–842–4082, Email: weibull@worldnet.att.net
5. ARMS Reliability (2009) Using Isograph’s Availability Workbench, www.isograph.com/software/availability-workbench