Lang E. Modelling spatial knowledge on a linguistic basis:Theoryprototype,integration / E.Lang,K.-U.Carstensen,G.Simmons, 1991. - VIII,137 p. p. - Текст : непосредственный.
[Reports] / Amer.inst.of aeronautics and astronautics. N 89-2535 : unseeded air MHD accelerator concept for high mach number hypersonic propulsion : Rep. presented at the AIAA/ASME/SAE/ASEE 25th joint propulsion conf., Monterey(Ca), July 10-12, 1989 / G.Simmons,G.Nelson,R.Hiers и др, 1989. - 15 p. - Текст : непосредственный.