@book{ international1991iaea, title={Numerical Indicators of Nuclear Power Plant Safety Performance (Report of a Workshop, Vienna, 5-9 September 1988 and a Technical Committee Meeting, Vienna, 4-8 September 1989)}, series={TECDOC Series}, number={600}, year={1991}, url={http://www.dgdingfa.net/publications/856/numerical-indicators-of-nuclear-power-plant-safety-performance-report-of-a-workshop-vienna-5-9-september-1988-and-a-technical-committee-meeting-vienna-4-8-september-1989}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} }