1. Dow's Fire & Explosion Index: Hazard Clssification Guide,1981
2. The Mond index: (How to identify, assess and minimise potential hazards on chemical plant units for new and existing processes),1985
3. Chemical Exposure Index;de Graaf;Proc. 6th International Symposium, Loss Prevention and Safety Promotion in Process Industries, Oslo, Norway,19221989
4. Knowledge based tools for reliability and safety analysis;Guagnini;Proc. European Symposium on Computer Application in the Chemical Industry, Erlangen,1989