Kletz, Trevor (April 1975). "Supplement to Safety Newsletter 75". Imperial Chemical Industries Limited Petrochemicals Division Safety Newsletter (75). Archived from the original on 14 July 2014. Retrieved 27 June 2014. – the same thought but with the lower-risk animal a cat had appeared immediately post-Flixborough in Safety Newsletter No 67 (July 1974)
Kletz, Trevor. "15/7 COMMENTS FROM READERS". ICI Petrochemicals Division Safety Newsletter (15). Retrieved 10 July 2014.
Kletz, Trevor (January 1976). "Must Plant Modifications Lead to Accidents?". Imperial Chemical Industries Limited Petrochemicals Division Safety Newsletter (83). Archived from the original on 14 July 2014. Retrieved 1 July 2014.– reprinted, with slight modifications in Chemical Engineering Progress, Vol 2, No 11, November 1976, p. 48
Cox, J I (May 1976). "Flixborough – Some Additional Lessons". The Chemical Engineer (309): 353–8. Retrieved 26 June 2014. (updated version of original article)
Kletz, Trevor (April 1975). "Supplement to Safety Newsletter 75". Imperial Chemical Industries Limited Petrochemicals Division Safety Newsletter (75). Archived from the original on 14 July 2014. Retrieved 27 June 2014. – the same thought but with the lower-risk animal a cat had appeared immediately post-Flixborough in Safety Newsletter No 67 (July 1974)
Kletz, Trevor (January 1976). "Must Plant Modifications Lead to Accidents?". Imperial Chemical Industries Limited Petrochemicals Division Safety Newsletter (83). Archived from the original on 14 July 2014. Retrieved 1 July 2014.– reprinted, with slight modifications in Chemical Engineering Progress, Vol 2, No 11, November 1976, p. 48