American Institute of Aeronautics and Astronautics,AIAA 18th Aerospace Science Meeting.AIAA 19th Aerospace Science Meeting(19th : 1981)：a collection of technical papers．V.1.AIAA,1981.
American Institute of Aeronautics and Astronautics,AIAA 18th Aerospace Science Meeting.AIAA 19th Aerospace Science Meeting(19th : 1981)：a colliction of technical papers．V.2.AIAA,1981.
American Institute of Aeronautics and Astronautics,AIAA 19th Aerospace Science Meeting.AIAA 19th Aerospace Science Meeting(19th : 1981 : St. Louis)：a collection of technical papers．V.3.AIAA,1981.
American Institute of Aeronautics and Astronautics,AIAA 19th Aerospace Science Meeting.AIAA 19th Aerospace Sciences Meeting(19th : 1981 : St. Louis)：a colliction of technical papers．V.5.AIAA,1981.
American Institute of Aeronautics and Astronautics,AIAA 19th Aerospace Science Meeting.AIAA 19th Aerospace Science Meeting(19th : 1981 : St. Louis)：a colliction of technical papers．V.4.AIAA,1981.
