[Reports] / Amer.inst.of aeronautics and astronautics. N 90-5055 : Launching AI in NASA ground systems : Rep.presented at AIAA/NASA second intern.symp.on space information systems,Sept.17-19,1990,Pasadena,Ca. / D.Perkins,W.Truszkowski, 1990. - 10 p. - Текст : непосредственный.
[Reports] / Amer.inst.of aeronautics and astronautics. N 89-2623 : Propulsion reliability-an historical perspective : Rep. presented at the AIAA/ASME/SAE/ASEE 25th joint propulsion conf.,Monterey(Ca),July 10-12,1989 / D.Perkins,J.Fragola, 1989. - 8 p. - Текст : непосредственный.