[Reports] / Amer.inst.of aeronautics and astronautics. N 89-2782 : ELEA : A tool for 3D surface regression analysis in propellant grains; Rep. presented at the AIAA/ASME/SAE/ASEE 25th joint propulsion conf.,Monterey(Ca),July 10-12,1989 / E.Saintout,D.Ribereau,P.Perrin,A.Le Roux, 1989. - 10 p. - Текст : непосредственный.