[1] Heikkilä, Anna-Mari. Inherent safety in process plant design. An index-based approach. Espoo 1999, Technical Research Centre of Finland, VTT Publications 384. ISBN 951–38–5371–3
[2] Papadakis, G. A., & Amendola, A., (eds) (1997) Guidance on the Preparation of a Safety Report to meet the requirements of Council Directive 96/82/EC (Seveso II)ISBN 92-828-1451-3