- OECD Nuclear Energy Agency (17)
- Organisation for Economic Co-operation and Development (17)
- International Atomic Energy Agency (2)
- International seminar (1)
- NEA Seminar on Interface Questions in Nuclear Health and Safety (1)
- OECD Nuclear Energy Agency. Co-ordinating Group on Site Evaluation and Design of Experiments for Radioactive Waste Disposal (1)
- Symposium on Nuclear Accidents: Liabilities and Guarantees (1992 : Helsinki, Finland) (1)
- Technical Committee on Natural Fission Reactors (1)