North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Propulsion and Energetics Panel. Symposium (77th : 1991 : San Antonio, Tex.)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Technical Information Panel. Specialists' Meeting (1991 : Instituto Nacional de Industria, Madrid, Spain)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Flight Mechanics Panel. Symposium (1991 : Brussels, Belgium)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Guidance and Control Panel. Symposium (59th : 1994 : Rome, Italy)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Aerospace Medical Panel. Symposium (1987 : Brussels, Belgium)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel. Symposium (1990 : Rethymno, Crete, Greece)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Fluid Dynamics Panel. Symposium (1990 : Friedrichshafen, Germany)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Structures and Materials Panel. Meeting (70th : 1990 : Sorrento, Italy)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Propulsion and Energetics Panel. Specialists ́Meeting (72nd : 1988 : Bath, England)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Structures and Materials Panel. Meeting (71st : 1990 : Povoa de Varzim, Portugal)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel. Symposium (1992 : London)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Fluid Dynamics Panel. Symposium (73rd : 1993 : Brussels, Belgium)