North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Propulsion and Energetics Panel. Symposium (67th : 1986 : Philadelphia, Penn.)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Structures and Materials Panel. Meeting (60th : 1985 : San Antonio, Tex.)
North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Propulsion and Energetics Panel. Specialists Meeting (63rd : 1984 : Lisse, 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. Structures and Materials Panel. Meeting (68th : 1989 : Ottawa, Canada)