1. M.P. Broadribb “Lessons from Texas city-A case history,” 2006 505 523
2. J.A. Baker III 2007 http://www.bp.com/liveassets/bp_internet/globalbp/STAGING/global_assets/downloads/Baker_panel_report.pdf
3. M.P. Broadribb “Three years on from Texas city,” 2008
4. Human Error