North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel. Specialists' Meeting (1991 : Ottawa, Ont.)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Fluid Dynamics Panel. Symposium (1987 : Bristol, Gloucestershire)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Propulsion and Energetics Panel. Symposium (1994 : Rotterdam, The Netherlands)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Fluid Dynamics Panel. Symposium (1990 : Scheveningen, The Netherlands)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Propulsion and Energetics Panel. Symposium (81st : 1993 : Fiuggi, Italy)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Mission Systems Panel. Symposium (3rd :. : 1995 : Lisbon, Portugal)