North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Propulsion and Energetics Panel. Symposium (79th : 1992 : Villepreux, France)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Propulsion and Energetics Panel. Symposium (82nd : 1993 : Montreal, Canada)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Guidance and Control Panel. Symposium (50th : 1990 : Çeşme/Izmir, Turkey)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Guidance and Control Panel. Symposium (51st : 1990 : Instituto Nacional de Industria, Madrid)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Aerospace Medical Panel. Symposium (4-5 April 1990 : Tours, France)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Aerospace Medical Panel. Symposium (2 April 1990 : Tours, France)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel. Symposium (1990 : Bergen, Norway)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Guidance and Control Panel. Symposium (46th : 1988 : Geilo, Norway)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Aerospace Medical Panel. Symposium (1993 : Lisbon, Portugal)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Aerospace Medical Panel. Symposium (1989 : Copenhagen, Denmark)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Technical Information Panel. Specialists' Meeting (1989 : Brussels, Belgium)