American Institute of Aeronautics and Astronautics,AIAA 1981 International Annual Meeting & Technical Display "frontiers of achivement".AIAA 1981 Annual Meeting and Technical Display "frontiers of achievement"(1981 : Long Beach, Calif.)．V.1.American Institute of Aeronautics and Astronautics,n. d..
AIAA 1981 Annual Meeting and Technical Display "frontiers of achievement"(1981 : Long Beach, Calif.)．V.1
American Institute of Aeronautics and Astronautics,AIAA 1981 International Annual Meeting & Technical Display "frontiers of achivement".American Institute of Aeronautics and Astronautics,n. d..
American Institute of Aeronautics and Astronautics,AIAA 1981 International Annual Meeting & Technical Display "frontiers of achivement".AIAA 1981 Annual Meeting & Technical Display "frontiers of achievement"(1981 : Long Beach, Calif.)．V.2.American Institute of Aeronautics and Astronautics,n. d..
AIAA 1981 Annual Meeting & Technical Display "frontiers of achievement"(1981 : Long Beach, Calif.)．V.2
American Institute of Aeronautics and Astronautics,AIAA 1981 International Annual Meeting & Technical Display "frontiers of achivement".American Institute of Aeronautics and Astronautics,n. d..
